Sunday School Letters for Churches • ChurchLetters Appreciation Letter to Long Time Adult Sunday School Teacher. Dear (FIRST NAME), Pastors and teachers both assume the awesome honor and responsibility of providing adults with deeper insight and understanding of God’s Word. Sunday School letter to parents This is a sample letter to parents. Note the order in which the activities occur. In this method art is not a review of a "long ago" Bible story, but a creative response to the child's experiences today. It builds a frame of reference by which to understand the Bible story. Think about this when combining art and other subjects in school.