Similar to another post, DS is working all challenge problems in the AoPS Algebra textbook. He is completing Algebra II in school and is solid in Algebra (AIME qualifier this year). I still thought it worthwhile to purchase the AoPS Algebra textbook to see if he is solid in Algebra. There are quite a few of the challenge problems in the Algebra book that give him some trouble.

We plan to get through the Algebra book and then do the online Intermediate Algebra, beginning in about April after AMC and hopefully AIME.