They encouraged diversity and I appreciate the fact that they allowed me to teach Bible studies at the school and in my home.

This sounds like GW claptrap to defend the school to me.

It is against the law for a foreign expert to do that, you can lose your job, and your Z visa be revoked. Bibles are not even allowed to be imported INTO China, although customs might overlook 1 for personal reading. I think you are talking rubbish here!