The Catechism in Questions & Answers

696. What is the function of Sunday School?

Children attend Sunday School when they begin school or reach school age. The objectives of Sunday School are:

to awaken and strengthen joy in fellowship with God’s children and in the divine service,
to impart understanding of God’s activity to the children in an ageappropriate manner through Bible stories,
to reinforce belief in divine promises,
to explain to the children the sequence of the divine service, the meaning of the sacraments, acts of blessing, and church holy days.