Premise: 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.
Hypothesis: Westbury Senior High School only teaches one grade.