Then that should be fixed, at least wrt. junior high. There's no reason to expect an English or French teacher to be proficient in Math, or vise versa.
But I also think that there should be specialized teachers for math long before high school. Teaching math (or whatever) is not just about knowing it, it is also about know how to teach it at this or that age. And I don't think general purpose teacher can be good in knowing how to teach all subjects.
I am perfectly fine with teachers who cant pass this test teaching subjects that are not math or physics (or chemistry I guess).
I am absolutely not fine with math teacher who passed this test and that is extend of it. Specifically, math teacher should know a lot more.
How would moderate math skills possibly help with that? You think every public school teacher should be run statistical sampling on a continual basis AND dynamically addressing them?
I want math and science teachers using proper spelling and grammar even if that's not the subject they teach.
And many classes have overlaps, e.g. at least around here language classes are also where a good chunk of media literacy happens, for which a basic understanding of math is sort-of needed.
Huh? Why should we care about the math skills of someone who only teaches English or French? Proficiency assessments should absolutely be subject-specific.