Dominic Raab syndrome

I had three head teachers in my 32 years.

One was pleasant but ineffective.

One had Dominic Raab syndrome and was permanently at war with the staff. He tried to sack the union rep (me!) and was thwarted by the united opposition of the NUT and other unions in the school. 

One was supportive of the staff and open to negotiation.

You can guess which head got the best results. Bullies never prosper.