Jericho High School is an American high school in the hamlet of Jericho in Nassau County, New York. It is the only high school in the Jericho Union Free School District. It opened in 1959. As of the 2014-15 school year, the school had an enrollment of 1,123 students and 99.6 classroom teachers, for a student–teacher ratio of 11.3:1. There were 25 students (2.2% of enrollment) eligible for free lunch and 3 (0.3% of students) eligible for reduced-cost lunch.