Plainfield South High School, or PSHS, is a public four-year high school located in Joliet, Illinois, a southwest suburb of Chicago, Illinois, in the United States. The school's address, phone number, and school district belong to Plainfield, however, the school is within the Joliet city limits. It is part of Plainfield Community Consolidated School District 202, which also includes Plainfield Central High School, Plainfield North High School and Plainfield East High School