Even though reliable recruiting agencies always try every effort to only cooperate with those reputable schools and educational companies, you should be careful when signing a contract so as to avoid the scams.
Things should be included in the contract:
[Recommended Reading: WORKING IN CHINA: SOMETHING YOU SHOULD KNOW ABOUT THE CONTRACT]
And you should:
Things you should pay attention if the employer do like this:
They are likely to have "hidden rules" that they don't want let you know
They will say something like, “There are also other excellent teachers who are interested in this position.”, “It will be your great lost if you refuse to sign the contract.” And “It’s impossible for you to find a good job like this one in China.” You know, a great number of good teaching jobs are everywhere in China, so don’t sign a contract that unsatisfied you.
Schools and companies with good reputation always respect and cherish their teachers. Therefore, please keep your eyes open when signing the contract officially if you don't want to be tied up by a “black-hearted” employer.