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. Its current building, located on Post Road at Jericho Turnpike in Old Westbury, New York (just north of Westbury Village), reached its 50th anniversary in 2008. Westbury High School serves 1,000 students from locations on and near the North Shore of Long Island, in Nassau County.