BROOKLYN - The family of a teen who was electrocuted at a Flatbush school filed a $10 million lawsuit against the Department of Education Monday.According to the suit, Luis Rivera, 17, was climbing over a chain link fence at P.S. 217 when he touched an electrical fixture that was not properly grounded. The lawsuit charges Rivera was climbing out of a schoolyard where he had been playing basketball because a custodial staff member locked kids in.The Board of Education says in lieu of Rivera?s death they are revisiting maintenance procedures for exterior electrical fixtures.