St. John's is an independent, co-educational day school presenting a 13-year sequence of college preparatory training. A non-profit institution, it was founded in 1946 to provide the community with a school of exacting standards in the development of individual, spiritual, ethical, intellectual, social and physical growth. While the means to achieve that purpose may change, it remains the basic mission of the School.
The School seeks to develop the whole person in preparation for a lifetime of personal fulfillment and contribution to society. In particular, it is dedicated to the enhancement and the expansion of future leadership for Houston and the country. The School offers talented, motivated and energetic students a genuine challenge for academic accomplishment and for development of a sense of self-worth and of personal responsibility. The School in turn holds itself responsible for providing that challenge.
St. John's School is accredited by the Independent School Association of the Southwest (ISAS). ISAS, a member of the NAIS Commission on Accreditation that has voluntarily submitted to a rigorous and impartial review of its accreditation program and demonstrated its adherence to the Commission’s Criteria for Effective Independent School Accreditation Practices. ISAS is commended by NAIS for the quality of the Association’s accreditation program for its Member Schools.