Hatboro-Horsham Senior High School is a comprehensive public high school, serving grades 9 -12, located in Horsham, Pennsylvania, about 17 miles outside of Philadelphia. Hatboro-Horsham Senior High School, a successor of the Loller Academy, originally opened in 1950 on Old York Road in Hatboro following the jointure of the Hatboro-Horsham School District. In the 1970s, the school relocated to the campus that currently houses Keith Valley Middle School on Meetinghouse Road.