Without wishing to sound heartless about your D, I have to agree with twoinanddone, above. You seem to have no recourse at the private school. (This could be a whole new thread, but I have heard of many similar things at private schools, and though public schools aren’t perfect, at least it’s harder for them to get away with these kinds of shenanigans.) If she is a senior she has no choice but to finish up. Can her therapist stress to her how important it is?