When I initially was told about this curriculum, I was a bit skeptical. Because I don't teach from a biblical stand point, I just assumed this would not be for me. A fellow homeschooler let me read hers, and I really loved it. Though there are biblical references and info, it is not overwhelmingly a biblical curriculum. I have purchased the set for this next year History classes, plus we will be doing some American History as well. I also really wanted to get into inventors, but I don't wish to overwhelm Caitlin and DJ so it might have to wait. There are four sets to the series, and each series is a full years curriculum. There is also an activity book that goes with it. So be sure to look for that too, if you decide you want to use it. The one thing that really made up my mind for me, is that I can use it for both kids even though they are in different grades.