plymouth south high school was opened in 1988, the same year the plymouth-carver school district was dissolved into the separate carver and plymouth school districts. plymouth-carver high school became plymouth north high school after the district separation of plymouth and carver. prior to its opening, plymouth north high school (then known as "plymouth-carver high school") had served as the sole high school for the towns of plymouth and carver. in the fall of 2017, a new building for the high school built behind the existing school opened replacing the old plymouth south which was demolished in the summer of 2017.