Central Bucks High School South, also known as CB South, is a public high school serving students in tenth through twelfth grades, one of three high schools in the Central Bucks School District. The school is located in Warrington, Pennsylvania in Bucks County.As of the 2014-15 school year, the school had an enrollment of 1,855 students and 101.1 classroom teachers (on an FTE basis), for a student–teacher ratio of 18.3:1. There were 114 students (6.1% of enrollment) eligible for free lunch and 36 (1.9% of students) eligible for reduced-cost lunch.Completed in late 2004, the school opened in January 2005, so the first graduating class attended classes in the school only during the spring semester of that year. CB South is the most recent high school in the Central Bucks School District, following Central Bucks High School East and Central Bucks High School West. The high school hosts grades 10 - 12 and is built for a just under 2,000 students. Its two feeder schools are Unami Middle School and Tamanend Middle School.CB South is located on Folly Road. The school cost approximately $84 million to build and is the largest school in the Central Bucks School District.