St Thomas' School is a kindergarten to higher secondary school for boys located in Kidderpore, India. It has one of the largest campus areas in the city of Kolkata comprising of three football size fields, two basketball courts and children's playgrounds. The campus also houses the St. Thomas' College of Engineering and Technology and has a church called the St. Stephen's Church. The school has adjacent division St. Thomas' Boys' School (STBS). The students of this school are nicknamed as Thomasites (boys).