Sabbath School, Saturday pre-service lessons for a congregation of seventh-day Christian denominations Sunday school, Christian religious school sessions for children held on Sundays, and known by some denominations as Sabbath School. Hebrew school, Jewish religious school sessions for children, sometimes held on the Sabbath and then known as Sabbath School. Sabbath School (Seventh-day Adventist), Sabbath School in the Seventh-day Adventist Church