Westbury Senior High School is a ninth-through-12th-grade school of the Westbury Union Free School District (USFD No. 1), the district covering the village of Westbury, New York, USA. Westbury High School serves 1,500 students from locations on and near the North Shore of Long Island, in Nassau County. It serves Westbury Village, New Cassel, New York and Old Westbury. Westbury High School is accredited by the Middle States Association of Colleges and Schools Commission on Secondary Schools. As of the 2018–2019 school year, the school had an enrollment of 1,621 students and 102.8 classroom teachers (on an FTE basis), for a student–teacher ratio of 15.8:1. There were 1,238 students (76% of enrollment) eligible for free lunch.

Notable alumni