"They heavily tested on Matrices. Not sure why, but maybe somehow they use it a lot. She hasn’t done them since 7th grade, so totally wasn’t prepared for it. "
I have a 9th grader in Algebra II and they are using matrices quite frequently, If your daughter hasn’t had them since 7th grade (and I’m assuming Algebra I), is it possible that math curriculum has changed at one point and this particular university is finding out that there are some students who may not have been exposed to certain standards the professors feel are necessary to master for the Cal I class?