A well furnished Library containing over 8,000 books on various subjects is the hub of all students . Maps, Magazine and newspapers are galore for the children to improve and enhance their knowledge in different fields.More and more books and periodicals are added each year.

St. Thomas International School has a spacious, centrally air conditioned, well stocked library with carefully selected standard books of national and international repute. Besides subscribing magazines and newspapers, the library also has a good collection of fiction books and encyclopedias for the overall enrichment of understanding of the students. Further, the computerized catalogue system ensures efficient and quick working.