The city says it will replace potentially dangerous light fixtures in hundreds of schools faster than initially planned.
The city had previously said that it would replace light fixtures in 645 schools found to contain toxic compounds called PCBs before 2021.
Now, it says the job will be done "well before" then, but wouldn't say exactly when.
A group of parents had sued the city to speed up the process. The city tried to have the case dismissed, but in late March, a judge ruled that the case should go forward.
PCBs were banned in the 1970s after it was found that exposure effects the nervous and immune systems.
On Tuesday, a smoking light fixture at a Harlem school caused almost 1,000 students to be evacuated and 11 students and teachers to be hospitalized due to fears of PCB exposure.