That teacher/principal sound like the professor/dean that I had in college. The "professor" was a diversity hire who couldn't teach code for shit, but was still regularly put in charge of big Comp Sci classes at the last second (often for mandatory subjects that students couldn't skip or get an alternative for).

After two semesters of worthless "teaching", my parents spoke to the department dean about her. The dean's response? "She's not getting as many complaints as she used to."

On an unrelated sidenote, the University of Central Florida's Comp Sci and Math departments are much worse than advertised...