Stockton High School houses grades nine through twelve. There are approximately sixteen full time staff members providing instructional services. Along with traditional classroom instruction, the high school also offers dual credit courses on the Stockton High School campus taught by staff members from Highland Community College, online virtual clases, and independent study opportunities. The high school continues to achieve excellence in the areas of academics, activities, and athletics. Achievements in the past year include two Illinois State Scholars in a graduating class of thirty eight students; First place finish by the choral and instrumental music department in the state music sweepstakes division D; girls basketball 2nd place finish in the state finals; and several individual participated in the state series in golf and girls' track.

The combination of strong instruction, excellent student motivation, and positive community support give Stockton students the opportunity to achieve their maximum potential.