West Windsor-Plainsboro High School South, commonly referred to locally as South, is a four-year comprehensive public high school located in Princeton Junction in Mercer County, New Jersey, United States, serving students in ninth through twelfth grades. The school is part of the West Windsor-Plainsboro Regional School District, a regional school district serving students from West Windsor (in Mercer County) and Plainsboro Township (in Middlesex County). It is one of two high schools in the district, the other being West Windsor-Plainsboro High School North. Students at High School South outperform other students in New Jersey on academic performance and college admissions tests. New Jersey students score on average 1080/1600 on the SAT, whereas High School South students score on average 1351/1600. The school offers several honors and Advanced Placement (AP) courses in various subject areas. The school determines both unweighted and weighted GPAs for students and does not rank students with the exception of the top five in every graduating class. History Prior to the school's opening, students from West Windsor and Plainsboro townships attended Princeton High School as part of sending/receiving relationships with the Princeton Public Schools. The high school was opened in September 1973 as West Windsor-Plainsboro High School and was described by The New York Times as the state's first high school to be developed with an "open space" plan, with open areas that could be divided off for instructional space that it said "looks more like a modern airline terminal than a high school". The school, constructed at a cost of $8 million (equivalent to $ million in ), initially served 700 students in grades 7 to 10, while the remaining students in grades 11 and 12 finished their schooling at Princeton High School through their graduation, with an expected enrollment of 1,300 once the partnership with Princeton was ended. Population growth in the district throughout the 1990s necessitated an additional high school. In 1997, the school was renamed by appending "South" to the school's name concurrent with the opening of West Windsor-Plainsboro High School North. Renovations and additions begun in 2006 and completed at end of the 2008-09 school year included a new gym, more parking spaces, a new cover for the pool, more classrooms, improvements on the HVAC system, and artificial turf for the football field. The estimated cost of the projects included in the referendum was $23 million. As of January 2010, all projects