The National Service Scheme (NSS) is a government program launched in 1969 that aims to develop students' personalities and sense of social responsibility through community service. The Teresian College has an active NSS wing that organizes blood donations, awareness campaigns on issues like diabetes and corruption, and special camps focusing on themes like organic farming literacy. Students gain leadership skills while working on community development activities. The college encourages NSS participation by offering certificates and bonus marks for higher education admissions.