A boys high school located in Mount Abu. It was established in 1887 as Mount Abu Railway School. The Irish Christian Brothers took over this school in 1929. This school is affiliated to ICSE board. It has facilities like classrooms, main hall, small chapel, volleyball court, basketball court, swimming pool etc. Had visited this school, watched a school play, sports event and prayed inside the small chapel as a school going child. Overall, a good school for day scholars and boarders in Mount Abu.