The teachers union and the NAACP are filing a lawsuit that seeks to block the closing of 19 low-performing New York City schools.
The union says the plan to close the schools violates state law because it fails to consider the impact of the school closings on the community.
New York City NAACP leaders say they will join the lawsuit because the school closings will hurt minority students.
The Panel for Education Policy voted last week to close the 19 schools, which it said are failing. The panel is controlled by Mayor Michael Bloomberg.
Hundreds of teachers and parents attended the panel's meeting to protest the closings.
Bloomberg and Chancellor Joel Klein have defended the closing of schools which they say are failing their mission.
candidates for city office.
The full list of school's scheduled to be shut down:
Academy of Collaborative Education (Manhattan)
Academy of Environmental Science (Manhattan)
Beach Channel High School (Queens)
Business, Computer Applications, and Entrepreneurship High School (Queens)
Choir Academy of Harlem (Manhattan)
Columbus High School (Bronx)
Frederick Douglas Academy III (Bronx)
Global Enterprise High School (Bronx)
Jamaica High School (Queens)
Kappa II (Manhattan)
Metropolitan Corporate Academy (Brooklyn)
Middle School for Academic and Social Excellence (Brooklyn)
Monroe Academy for Business Law (Bronx)
New Day Academy (Bronx)
Norman Thomas High School (Manhattan)
Robeson High School (Brooklyn)
School for Community Research and Learning (Bronx)
W.H. Maxell CTE School (Brooklyn)
PS 332 Charles H. Houston (Brooklyn)