Pekin Community High School District 303

Pekin Community High School District 303 is a public school district in Pekin, Illinois, that operates one high school, Pekin Community High School (PCHS). District 303 serves students living in Pekin and surrounding areas such as South Pekin, North Pekin, Marquette Heights, Creve Coeur, and Groveland. As of 2025 the school has 1,737 students.

The 125-acre (51 ha) campus includes its principal campus buildings totaling 550,000 square feet (51,000 m²) of space; these buildings house 133 classrooms, the 600 seat F.M. Peterson Theater, two gymnasiums, a natatorium, and several computer labs.