NEW YORK - The city's Department of Education has agreed to remove PCB light fixtures from schools five years sooner than originally planned.

Education officials say they will replace toxic fixtures from 645 schools citywide by Dec. 31, 2016. The announcement is part of an agreement with the New York Communities for Chance, which filed a lawsuit in 2011 demanding that the city speed up the process.

Parents at many Bronx schools, such as P.S. 121, have long rallied for the removal of PCB lights from their children's classrooms.

Officials say that nearly 800 of the 1,400 city school buildings could have contaminated light fixtures.