St. Mary's occupies a large area in the heart of Dindigul, five minutes from the bus stand.

The environment of the school includes green, spacious grounds and multiple sports fields.

Besides sports, extracurriculars include drama, handwriting competition, poetry, music, NSS, NCC and NCC (Airwing), JRC, Scouting, and National Green Secretaries for Students.

St. Mary's Higher Secondary School provides four branches for class XI & XII: Computer Science, Biology (with maths and physics), Accounting & Commerce, and Vocational Group (EMR, Textile, EDA, Sports).

Generally all students of St. Mary's School pass the X (SSLC) exam.