The West Windsor-Plainsboro Regional School District is a comprehensive high achieving regional public school district in New Jersey, United States, serving students in pre-kindergarten through twelfth grade from West Windsor Township (in Mercer County) and Plainsboro Township (in Middlesex County). There are four elementary schools (grades PreK/K - 3), two upper elementary schools (grades 4 and 5), two middle schools (grades 6 - 8) and two high schools (grades 9 - 12). Niche.com listed the district as fourth best in New Jersey, and 63rd best in the nation, according to its 2023 Best Schools ranking. As of the 2020–21 school year, the district, comprised of 10 schools, had an enrollment of 9,386 students and 773.2 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.1:1. The district is classified by the New Jersey Department of Education as being in District Factor Group "J", the highest of eight groupings. District Factor Groups organize districts statewide to allow comparison by common socioeconomic characteristics of the local districts. From lowest socioeconomic status to highest, the categories are A, B, CD, DE, FG, GH, I and J. History The West Windsor-Plainsboro Regional School District was the result of the 1969 merger of two separate, neighboring school districts - the Plainsboro School District and the West Windsor School District - as the population of both municipalities was starting to grow rapidly. The districts merged so that they could accommodate the increasing number of students newly enrolling. Dutch Neck and Wicoff elementary schools were constructed well before the establishment of the regional district. Constructed at a cost of $8 million (equivalent to $ million in ) and designed to ultimately accommodate an enrollment of 1,300 students in grades 7-12, West Windsor-Plainsboro High School (since renamed as West Windsor-Plainsboro High School South) opened in 1973 for grades 7-10, with students in grades 11 and 12 completing their education at Princeton High School. With a decline in the number of student-athletes playing football at WW-P North that would be inadequate for the school to field a team of its own, the district attempted to combine the teams from the two schools to have them operate as a single cooperative football team for the 2017-18 school year based at South HS. Given that the size of the schools is larger than the threshold established by the state for co-op programs (North is classified as Group III and