YRDSB is optimizing air quality in schools through improved ventilation and filtration. This is a key element in the protective strategies being employed to reduce the risk of COVID-19 transmission and support healthier and safe learning environments.
See below for information on ventilation in each elementary school (N-Z) or use the links below to find your school:
Elementary Schools N-Q
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 6 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 4 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 5 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 16 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | Yes | 
| Standalone HEPA filter units in place | 9 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | Yes | 
| Standalone HEPA filter units in place | 29 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | No | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 6 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 6 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 11 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 1 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 21 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
Elementary Schools R-T
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 4 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 4 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 25 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 6 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 5 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 1 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 4 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 22 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 14 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | Yes | 
| Standalone HEPA filter units in place | 19 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 1 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 3 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 4 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 1 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 5 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | No | 
| Standalone HEPA filter units in place | 1 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 2 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 21 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 5 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 9 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 9 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 5 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
Elementary Schools U-Z
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 15 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | Yes | 
| Standalone HEPA filter units in place | 1 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 5 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 6 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 21 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 5 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 5 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 6 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Partial Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 19 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | No | 
| Standalone HEPA filter units in place | 4 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | No | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 8 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 1 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 7 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 1 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)
| Ventilation System | Mechanical Ventilation | 
| Ventilation assessed | Yes | 
| Running ventilation systems longer | Yes | 
| Higher grade filters installed (MERV13) | Yes | 
| Increased frequency of filter changes | No | 
| Increased fresh air intake (windows and/or mechanical ventilation systems) | Yes | 
| Standalone HEPA** filter units deployed in portables, as needed | N/A | 
| Standalone HEPA filter units in place | 4 | 
*Some measures may not be feasible within the context of a school facility/site and related building systems.
**High-Efficiency Particulate Air (HEPA)