St. Thomas English Medium High School is a selective school with a multicultural, socially diverse and geographically dispersed student population. High provides equal opportunity for gifted boys and girls to achieve excellence in academic, cultural, sporting, civic, leadership and social endeavours, in a comprehensive environment that supports learning, teaching and friendship. Founded in the year 2003, stems is a private recognized, un-aided, co- educational school under The Northern India Zonal Assembly of the Marthoma Church Delhi Diocese. His Grace Rt Rev. Dr. Theodosius Mar Thoma Metropolitan serves as the Chairman Of the Institution.