Carlisle High School is a public high school located in Carlisle, Pennsylvania in the United States, and includes grades 9–12. In 2010 the school reported having 1,493 pupils enrolled with 346 pupils eligible for a federal free or reduced price lunch. The school employed 110 teachers yielding a student teacher ratio of 13.50:1. According to a report by the Pennsylvania Department of Education, 14 teachers were rated "Non‐Highly Qualified" under No Child Left Behind.