A rally was held outside City Hall Wednesday to urge the Department of Education to come clean about health risks in public schools.
Community leaders say PCB chemicals, which pose serious risk to brain development, are leaking in most public schools.
Elected officials said they are pushing a bill requiring the DOE to notify parents of any contamination and post the results on their website.
"We have a lawsuit against the city on this matter because they have proposed a 10-year timeline. That's a completely ridiculous period of time," said Miranda Massie of New York Lawyers For Public Interest. "This problem must be solved in a much shorter time frame."
"We can't stay silent when evidence time and time again shows that our children are being taught in a toxic and deadly environment," said Bronx Borough President Ruben Diaz Jr.
DOE officials said in a statement that they started a citywide effort addressing PCBs in schools and argued it is inappropriate for politicians to scare parents with what they deem "shoddy" information.
The DOE officials also said there is no scientific evidence that the level of PCBs in school buildings is a risk to those inside.