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The Island Trees High School is a coeducational public high school serving students in ninth through twelfth grades , located at 59 Straight Lane , Levittown , New York .. Levittown. Levittown, New York. ninth. ninth grade. New York. New York ( state ). It is a part of the Island Trees Union Free School District , 31.0 miles east of Manhattan .. Island Trees Union Free School District. Island Trees Union Free School District. The school offers various clubs , electives , and AP courses .. Island Trees High School serves portions of Levittown , Bethpage and Seaford .. Levittown. Levittown, New York. Bethpage. Bethpage, New York. Seaford. Seaford, New York. As of the 2014-15 school year , the school had an enrollment of 770 students and 58.7 classroom teachers -LRB- on an FTE basis -RRB- , for a student -- teacher ratio of 13.1 :1 .. FTE. full-time equivalent. There were 87 students -LRB- 11.3 % of enrollment -RRB- eligible for free lunch and 34 -LRB- 4.4 % of students -RRB- eligible for reduced-cost lunch .. free lunch. National School Lunch Act