DS12 will finish up Saxon Algebra 1, 3rd ed., in a few months. He does well with Saxon and we plan on eventually proceeding to Saxon Algebra 2 and Saxon Advanced Mathematics. He has been doing fine, scoring 85 or so on most of his tests. I think his conceptual understanding is excellent, but he is prone to making sloppy mistakes. After he finishes the Saxon Algebra 1 book, here are some options: proceed directly to Saxon Algebra 2, assuming he scores 85 or higher on his last three tests; spend a couple of months reviewing Algebra 1 using AoPS, Lial, Foerster, or Jacobs. I think he'd be fine proceeding to Saxon Algebra 2. However, he is quite young and I worry about him falling into the "Calculus Trap." At his current pace, he'll finish Calculus at age 15. I like the idea of building in some "detours" in between Saxon texts. He will probably tackle Jacobs Geometry after Saxon Algebra 2, for example. I am a little concerned about his sloppiness and would prefer to see him scoring a bit higher on his tests. So I am leaning toward option #2. However, I am not sure which book to use for Algebra review. We tried AoPS a few years ago and it didn't go well. My son is not passionate about math and is not a math genius. I own Jacobs' Algebra book; it looks relatively easy compared to Saxon Algebra 1. I don't know if this would be the right book for us. I have not seen Lial or Foerster. I know they are popular here.