You cant claim for bad teachers
Sorry, but this is what the board will say more or less:
"If you know you had bad teachers, you could always look up the sylabus, read textbooks, get tutoring, ask a friend to teach you, and learn the course entirely on your own, you could even call the advice line for your questions."
And I tend to agree, I was very lucky that I didn't have a single incapable teacher for the subjects I did but having a bad teacher is not an excuse for not looking into the sylabus and seeing whats required.