Seminar Room
At the Seminar Room, workshops, meetings and group discussions are conducted in a large and open space, and up to 200 people can be seated in the Seminar Room at the same time

Sports Area
St. Thomas School has facilities for outdoor games like cricket, football, Kho-Kho, Voleyball with designated grounds, along with basketball and skating courts. Also with indoor games like chess, carom and table tennis, students are nourished with a balance of study and play.

Transport Department
St. Thomas School, with strength of approximately 1,400 students and 65 staff members, has a most efficient transport department. The school facilitates 5 buses for commuting students and teachers. This department plays a pivotal role in coordinating the scores of school buses essential for ferrying students and faculty members from different parts of the city to the school and vice-versa. This department also holds the additional responsibility of arranging vehicles for visitors, for recreational activities like school picnics, and to send students to participate in various inter-school activities.

The library boasts of 10, 000 with the number increasing with each passing day. The libraries have sections ranging from textbooks and reference books to fiction and general knowledge. Since the school aims at making learning a fun process, there is an assortment of books and magazines available on general topics and separate sections for hobby-related books, books on travel, animal care, short stories, autobiographies, biographies, drama, poetry, astrology and other topics.

Computer Labs
The school has a computer laboratory accessible to students during and after school hours with advanced infrastructure in terms of hardware and software to cater to the requirements of the students, teachers and the curriculum.

Science Lab
The school has a state of the art Biology, Chemistry and Physics Labs with all the modern equipments. Apart from that the school also has a computer lab for the students. The labs along with the trained teachers strive hard to impart practical and professional applications of what is taught in class.