Founded in 1990 under the aegis of Fr Chacko Kakkanatt, St. Thomas High School is located at Shantipur No 5 in Sadiya Sub-division, in the Tinsukia District of the North-eastern Indian state of Assam. The School Campus is situated in the midst of the sylvan surroundings, beautiful lawns and lush green trees, creating a suitable ambience for learning and development. Affiliated to State Board of Secondary Education(SEBA),Guwahati, the School is committed to providing excellent high school education in the remotest part of Assam. Its plays a significant role in nurturing pupils to develop to their full potential and be well-equipped to face the challenges of the future with confidence.