There is no one like Dr Tejuoso that won't have oppositions here and there. If he isn't dancing to their tunes, they gang up to accuse him falsely. These kinds of people go about plotting the downfall of kind people like Dr Tejuoso. That is life for you.
With all you said about him, I can see he is one who would want students to excel at all cost and those are the kind of people students want.