Chances are, you are either leading a group yourself, or you are responsible for the small groups of your church. (Or maybe you are in a group and you wish your leader was doing a better job!)
This link is from Lifeway and it's an exerpt from Michael Zigarelli's book, "Freedom from Busyness". You might want to copy and paste the link and send it to your group/Sunday School leaders, or print the list and give it to each of them. Better yet, buy each of them a copy of the book as a thank you and encouragement.