ID reader and commenter Christian LaBlanc, has created a great resource for middle school catechesis:  The Bible Tells Me So: A Year of Catechizing Directly From Scripture.

The Bible Tells Me So is divided into three Units: 1 and 2 treat the Bible chronologically from Genesis to Revelations, emphasizing the Catholic understanding of Scripture. These classes are taught directly from the Bible. Unit 3 then examines the Mass in lessons which draw from the knowledge gained in the preceding units, using the Bible and a Missalette.

Check it out!