Well there you go his real crime in teaching students about their Fifth Amendment rights is because he is teaching them to think critically! By answering questions about drug and alcohol abuse they would be incriminating themselves!
No one on the left wants kids being taught critical thinking let alone anything about the Constitution because it will result in people going against the grain, challenging the establishment vs being told what they have to do & know!
One more example that people need to remove current boards of education. They must be replaced with people who have morals, ethics and believe in the Constitution!