The Mar Thoma Sunday School plays a central role in the faith formation of children within the Malankara Mar Thoma Syrian Church. It operates globally through a central administrative body, while strategically adapting locally to serve diaspora communities such as those in Canada.

The Mar Thoma Sunday School Samajam, headquartered in Kerala, India, serves as the global church's central Christian education department. Formally inaugurated in 1905 at the historic Maramon Convention, the Samajam operates under the motto "Come to Jesus, Bring Every Child to Jesus." It manages a massive global network of over 1,100 registered Sunday Schools and nearly 50,000 students. By using a comprehensive 14- to 15-year curriculum, the Samajam ensures that youth worldwide receive a solid, unified foundation in biblical understanding, church doctrines, and core Christian values.

In Canada, local programs like the Canadian Mar Thoma Church (CMTC) Sunday School operate under the Diocese of North America and Europe to tailor this global tradition to the realities of the North American diaspora. These schools adapt the central curriculum for students from preschool through 12th grade, ensuring that biblical teachings and Mar Thoma church traditions resonate within a Western cultural context. Weekly sessions combine collective praise and worship with interactive classroom instruction, while major annual events—such as Vacation Bible School (VBS), World Sunday School Day, and charitable mission drives—make it the vibrant hub of parish youth life. Ultimately, the Canadian Sunday School acts as a vital cultural bridge, connecting Indo-Canadian children to their Eastern Reformed heritage while equipping them to navigate modern life.