Well--she's a third grade teacher! I don't think that's so terrible. I'd hope she still has HS math proficiency at a basic level (I'm not sure what that is, TBH), but teaching is pretty different from doing.
(And I seriously doubt I could still DO trigonometry, for example, myself. I'd have to undertake some serious review. Yeah, I know. I'm going to have to brush up. Math is not my strength. Fortunately, DH is very good at it.)
I am getting the same from my ds9 3rd grade school.
They say the teacher can't teach the math my son needs well enough.
I read something recently and believe it was on the AoPS web site.
(To get a better idea of how well you know something, try teaching it to someone else.) Not an exact quote.
