Private Schools in O Fallon, Illinois

Westminster Christian Academy is a highly-rated private school located in nearby St. Louis that serves many families from the Illinois side including O'Fallon. The school offers a classical Christian education model with rigorous academic standards, including 21 Advanced Placement courses. Westminster features state-of-the-art facilities including science and technology labs, fine arts studios, and extensive athletic complexes. The school maintains a strong college preparatory focus with 100% of graduates attending four-year colleges and universities. Comprehensive extracurricular programs include championship athletic teams, competitive fine arts, and numerous student organizations.

Althoff Catholic High School is a highly-regarded college preparatory school serving the Greater St. Louis metro area including O'Fallon families. The school offers a rigorous academic program with 17 Advanced Placement courses, comprehensive STEM education, and competitive athletic programs. With small class sizes averaging 18 students, Althoff provides personalized attention and strong college counseling. The campus features modern science labs, technology-integrated classrooms, and extensive athletic facilities. The school emphasizes character development through service learning and spiritual formation.

Gibault Catholic High School serves students from multiple communities including O'Fallon with a comprehensive college preparatory education. The school offers dual credit courses through partnerships with local colleges, advanced STEM programs, and extensive extracurricular opportunities. Gibault's 40-acre campus includes modern academic facilities, athletic complexes, and performing arts spaces. The school maintains a 100% college acceptance rate and emphasizes leadership development through various student organizations and service programs. Small class sizes ensure individualized attention and strong teacher-student relationships.