By no means is this page complete, and I have not used all of these sites. They are just pages I have come across and found interesting, and others may find them helpful.
Studying God’s Word – Workbooks that study the bible in multiple levels (This link is just to one level, search for others – A-H)
Wise Up: Wisdom in Proverbs – In middle school, young people face more and more decisions on their own. Soon they find that their new freedoms are followed by greater responsibility and higher expectations. Wise Up encourages your students to study the wisdom of God in Proverbs, allowing Him to shape their lives into the image of His Son, Christ.
A Content Heart (Youth): Finding Godly Contentment in a Me-First World – (THIS LINK IS JUST GENERAL – YOU CAN SEARCH FOR OTHER VENDORS THAT SELL IT TOO)
A Content Heart is a 22-lesson Bible study helping kids and teens to find godly contentment in a me-first world. Students will go on a journey through Scripture, learning how to practically and realistically find contentment with themselves, their circumstances, and their worldly possessions.