I worked for this school years ago. I encountered double standards like never before. The school broke my contract by not providing free Chinese lessons and by making me work unpaid overtime. At the same time if I was 3 or 4 minutes late I would get "fined" and threatened for "breaking" the contract.

Which campus were you at? Were you in Huangqi or Shishan? Shishan has three campuses (Primary, Middle and Senior) and Huangqi has two (Middle and Senior).