Sunday School curriculum from Group, David C Cook, Wesley, and more. Dated & Non-Dated Children's Church & Sunday school lessons for toddlers to adults. Find the best children's Sunday school curriculum at Group Publishing. Some of the best kids' Sunday school curriculum comes from the DIG IN, FaithWeaver NOW and Hands-On Bible Sunday school curriculum lines. Hundreds of thousands of people each week have transformative encounters with God through Bible-based, Christ-focused Sunday school lessons in Adult Bible Studies.