Teachers and staff at about 20 NYC schools told to work remotely due to ventilation issues

School classroom with blackboard
Photo via Getty Images

New York City’s Department of Education is instructing the staff at about 20 schools to not return to their buildings on Tuesday, Sept. 8, due to airflow issues found during recent ventilation system inspections. 

Teachers, principals, and other school staff are expected to return to school buildings tomorrow to prepare for the upcoming school year. Initially, classes were set to begin on Sept. 10 but Mayor Bill de Blasio delayed the start of school until Sept. 21, after pressure intensified to delay the beginning of in-person classes from parents and teachers claiming that schools were not ready to reopen citing issues with ventilation systems in classrooms and a lack of COVID-19 testing for students and staffers. 

On Labor Day Monday, the Department of Education released updated findings from a series of school ventilation system inspections that began in late August. The city had pledged to finish inspections by Sept. 1 and post the results online on Friday, Sept. 4, but officials missed both deadlines. 

Despite numerous calls for a delay to in-person classes, de Blasio and Schools Chancellor Richard Carranza repeatedly said that the city’s nearly 1,800 public schools would be ready to receive students some days of the week by Sept. 10. But the pressure to delay continued to mount earlier this month and the city public school teacher union threatened a job action, including an illegal strike, if more time wasn’t given to its members to ensure that school buildings could safely reopen. 

The Sept. 8 report found that engineers inspected both “mechanical and natural” ventilation systems in rooms inside of 1,485 schools, according to the DOE. Officials are informing the principals Monday whether rooms in their schools had adequate airflow to accommodate students and teachers with all “room-level” determinations will be posted online tomorrow. 

“Since June 3rd, we’ve been surveying, assessing, repairing, and improving buildings to guarantee proper ventilation, which is defined as the free flow of fresh air in and out of a space, and can, in the vast majority of cases, be achieved by having an open window,” said DOE spokesperson Nathanial Styer. 

The city is currently working to identifying alternative spaces for classes if the repairs inside of the 10 buildings housing the schools can not be completed by Sept. 21. School leaders are expected to work with the Division of School Facilities staff on repair timelines and determining the impact of temporary classroom closures on school programming. All repairs though are expected to be completed with the “next couple of days,” according to Styer. 

The Division of School Facilities is also working to install portable High-Efficiency Particulate Air filters in rooms, flush air two hours before and after occupation and upgrading MERV-8 to MERV-13 filters where appropriate to improve air circulation. 

Here is a list of the impacted schools: 


Building Code 

Impacted Schools 



PS 45 – Horace E. Greene School 




PS 45 – Horace E. Greene School (Annex Building)


M490 (Martin Luther King Jr. Educational Campus)  


The Maxine Greene HS for Imaginative Inquiry 

Urban Assembly School for Media Studies 

High School for Law, Advocacy and Community Justice 

High School of Arts and Technology 

Manhattan / Hunter Science High School 

Special Music School 



P.S. M721 – Manhattan Occupational Training Center 

Harvest Collegiate High School 




Leadership & Public Service High School 



P.S. Q222 – Fire Fighter Christopher A. Santora School 




The Riverview School 

P.S. 110 



P.S. M094 

Sixth Avenue Elementary School 

M620 (Norman Thomas High School building)  


Success Academy Charter School – Harlem 1  

Success Academy Charter School – Harlem 3  

Manhattan Academy for Arts & Language   

Murray Hill Academy  

Unity Center for Urban Technologies 



High School of Economics and Finance