Garbage, total garbage. Mac, do NOT let your daughter listen to opinions like this. Many girls are very gifted in math, I was, and being told "girls don't do well in math" (all they hear out of a statement like the above) just offers a reason not to try.
Specifically, no advice except if you can, get her out of that school and into private or homeschool. But that's the same advice I'd have for any parent. Perhaps write an email to the teacher outlining your concerns about the test portion of the grade and cc it to the principal?
You’re right, JenB. That’s a horrible and inaccurate statement on the part of LanceyHoward. There’s no evidence that this girl isn’t quite competent in math, and the average difference in test scores—despite attitudes like this—is very small. In fact, at this girl’s age, girls tend to do better than boys in math.