Christian Brothers College High School is fully accredited by the North Central Association Commission on Accreditation and School Improvement (NCA CASI).
NCA CASI is an accreditation division of AdvancED, which represents the unification of NCA CASI, the Southern Association of Colleges and Schools Council on Accreditation and School Improvement, and the National Study of School Evaluation. NCA CASI is responsible for reviewing and accrediting nearly every private and independent school in the St. Louis region.
Further, CBC is in voluntary compliance with all accreditation standards required in Missouri public schools, which have been established by the Department of Education, State of Missouri. CBC is also a member of the National Catholic Educational Association and the Christian Brothers Education Association.