If you did not worry about CTD put up high school level world history content into that Greek mythology class, why would you worry about they put some spice of middle school pre-algebra in those three weeks. After all, CTD classes are 2-year-ahead as they acclaimed. If you kid is 50 percentile or above on EXPLORE Math, which is around 15/25. She should be ready for the challenge. And you should see big leap in EXPLORE a year later. My DS10 had 10-pt improvement in EXPLORE Math after some pre-algebra exposure.
