St. Mary's Convent College, Nainital is situated on a gently sloping hill with 26 acres of ground, admiringly adapted for a boarding school. It was founded in 1878 by Mother Salesia Reiner, to provide an all round education to all sections of society, regardless of caste, creed or financial status. The children are prepared for the ICSE Examination at the Class 10 level and ISC Examination at the +2 level, conducted by the Council for the Indian School Certificate Examinations, New Delhi.

The school is managed by the sisters of the Congregation of Jesus, in collaboration with a dedicated and competent staff. This institution, established and administered by the Christian Society, comes under articles 29 and 30 of the Indian Constitution.