Students are heading back to the classroom at the Anne Hutchinson Elementary School in Eastchester.The school was closed last week due to an asbestos cleanup. The asbestos was discovered on the second floor of the school after it underwent a roofing project. School officials say the cleanup is finished and air tests show the building is now safe for students and teachers.Students at the school attended class at Greenvale School while the cleanup was being completed.Eastchester school closed on first day of classes