she is in yr 12 which is I think old enough for her to make the complaint herself but I know that a few of her classmates have done so and nothing has been done.What they can do I don't know.
It is As maths .Teacher is dutch which I find surprising as I find dutch accent easy to understand but dd sasy this woman is impossible to understand.
She has lessons with anther teacher for another component of maths so not her sole teacher thank god.
Would you call the school?