Sunday school 
noun
A class held on Sundays to teach children about Christianity or Judaism.Regularly three times a week we have meetings and continue to teach children in our Sunday school....
- Mrs Pye became a well-known figure in the town and was a stalwart of St David's Church, where she taught at the Sunday school.
- Josephine has only finished third grade but decided to enroll in a Sunday school at a local church in Virginia.