St. Teresa High School has served families in Decatur and Central Illinois since 1866. Founded on the belief that every student is created in the image of God, we provide a college-preparatory education that develops the whole person through faith, scholarship, leadership, and service.

As a Catholic high school in the Diocese of Springfield in Illinois, St. Teresa welcomes students from many backgrounds who are seeking an education grounded in Christian values. Our students are challenged academically, encouraged spiritually, and supported by faculty and staff who know them as individuals.

Learning extends well beyond the classroom. Students participate in athletics, fine arts, service opportunities, clubs, retreats, and leadership experiences that help them discover their talents while building character and lifelong friendships.

The St. Teresa experience is strengthened by generations of dedicated alumni, supportive families, generous benefactors, and committed educators who continue to invest in the school's future. Together, they help ensure that each student graduates prepared for college, career, and a life of faith and service.

Schedule a Visit Apply Today