St. Thomas' English Medium School language of communication (both written and verbal), all the subjects are taught in English language; apart from Hindi (subject), which is an exception and a regional language. STEMS is tied up closely with The Church. Staff members (including administrators, teachers and helpers) practice Catholicism. Daily assembly happens in the large playground where students start their day with prayers and The National Anthem of India, Jana Gana Mana. Terminal examinations are held thrice every year to keep a performance check and provide feedback about students' progress. Students are required to answer a set of questions, typically by handwriting all answers on
Jana Gana Mana enthralled the college students while Margaret Cousins, then vice-principal of the college (also an expert in European music and wife of Irish poet James Cousins), both requested Tagore to create an English translation of the song and set down the musical notation to the national anthem, which is followed only when the song is sung in the original slow rendition style. Tagore translated the work into English while at the college on 28 February 1919, titled . The college adopted Tagore's translation of the song as their prayer song which is sung till today. Before it was the national anthem