My DS10 did Algebra 1 during fall 2016. It was a disappointing class - it was online and "dumbed down". It corresponded with Saxon Algebra 1/2. He started Saxon Algebra 2 spring 2017 and is about 1/2 through it, C average. No problem with the concepts, but he makes lots of "stupid little" ADHD mistakes. The challenge level is right. I'm guessing he'll end up placed in Geometry since he hasn't taken it yet. The Saxon curriculum includes geometry problems so he might score better on Geometry than I suspect.