Manual of The Mother Church/Church Services/Sunday School
The Sunday School. Section 1. Pupils may be received in the Sunday School classes of any Church of Christ, Scientist, up to the age of twenty years, and by transfer from another Church of Christ, Scientist, up to that age, but no pupil shall remain in the Sunday School of any Church of Christ, Scientist, after reaching the age of twenty. None except the officers, teachers, and pupils should attend the Sunday School exercises.
Teaching the Children. Sect. 2. The Sabbath School children shall be taught the Scriptures, and they shall be instructed according to their understanding or ability to grasp the simpler meanings of the divine Principle that they are taught.
Subject for Lessons. Sect. 3. The first lessons of the children should be the Ten Commandments (Exodus, 20: 317), the Lord's Prayer (Matt. 6: 9-13), and its Spiritual Interpretation by Mary Baker Eddy, Sermon on the Mount (Matt. 5: 3-12). The next lessons consist of such questions and answers as are adapted to a juvenile class, and may be found in the Christian Science Quarterly Lessons, read in Church services. The instruction given by the children's teachers must not deviate from the absolute Christian Science contained in their textbook.