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.
A 5th grader can go to Westbury Senior High School.
A 5th grader, a 4th grader, a 99-year-old, anyone can go visit Westbury Senior High School for reasons other than to be educated there. Only 9th-12th graders can enroll in the school as students. That's not the same as saying no one else can even show up to the school for any other reason.