The Sunday School is the church’s way of reaching out to our youngest members to help mould them into good human beings who live with Christian values. It plays a major role shaping their character and enabling them to grow into responsible members of the society.

Mar Aprem Sunday School teaches studentss from Grade 1 through Grade 10. Examinations are conducted twice a year to test the students, and the annual cultural fest (Kuruvilachan Trophy) is held to bring out and nourish their talents that help the ministry.

The history of Mat Aprem Sunday School can be traced back to the year 1905, when Rev. Fr. Padavupurakkal Thomas alias Kuruvilachan initiated the Gospel Children Shining Light Sunday School to instil in children the faith of the Apostolic Church faith. In 1914, the school was renamed to Bethany Sunday School , and it was rechristened to its present name – MAR APREM SUNDAY SCHOOL in  1920.