Collinsville High School is a four-year comprehensive public high school serving the secondary educational needs of the Collinsville Community Unit School District #10. Collinsville High School has an enrollment of approximately 2,100 students and employs over 165 teachers/staff members. 

CHS offers a rigorous curriculum to prepare students for post-secondary education as well as the work force. Co-curricular activities (sanctioned by the Illinois High School Association) provide students with opportunities to participate in a variety of sports, student organizations, conferences, conventions, contests and tournaments. We take pride in several of our accomplishments with career success. In the latest graduating class, 73% of our students are attending college and 27% are enrolled in post-secondary programs, apprenticeships, military service and full-time work.