Could well be that you came across that type of stupid, autocratic headmaster that nobody needs and who would be a total failure at a western school but seems a good fit for China.

Can't say I have!

Anyways, I'm not prepared to condemn Beijing No. 80 High on the basis of one solitary complaint, especially as it hires a lot of foreigners compared to many other high schools in China. If it were indeed a bad place to work at, one would expect more than one complaint in the circumstances!