Below are the results of each school’s indoor air quality (IAQ) tests and air exchange testing (Air Changes Per Hour, ACH). These reports include information about air quality standards and guidelines, when tests were conducted, who conducted them, and an explanation of what was found.

 May 6, 2021 Update 
The air exchange tests were recommended by Harvard T.H. Chan School of Public Health's Healthy Schools program to guide strategies for optimizing air flow and ventilation as one of the strategies to reduce the risk of spreading COVID-19. Most schools did not need additional repairs or updates. In a few circumstances, necessary repairs have been completed in the following schools:

• Boston Arts Academy
• Charlestown High School
• Community Academy of Science and Health 
• Dearborn STEM 6-12 Academy
• Ellison, Dr. Catherine/Parks, Rosa Early Education School 
• Haley, Dennis C. Pilot School 
• Haynes, Rev. Dr. Michael E. Early Education Center
• Lee, Joseph K-8 School
• Mission Hill K-8 School
• Muniz, Margarita Academy
• Murphy, Richard J. K-8 School
• O'Bryant, John D. School of Math & Science
• Ohrenberger, William H. School