St. Mary’s High School is an all boys boarding educational institution situated in the beautiful city of Mount Abu in Rajasthan it was established in 1887 and has a long history . Previously in 1887 it was known as Mount Abu Railway School (MARS) as the school was under railways control but in 1929 Irish Christian Brothers took over and began a new innings of St. Mary’s High School . The school has an amazing architecture incorporating ventilated classrooms , huge playgrounds , safe and secure accommodation , hygienic dining area and much more. Affiliated to ICSE curriculum this English medium school is known for its disciplined and developmental environment.