At present, foreigners go to school in the workplace, and the admission standards of each school are different. If you only want a labor contract, the contract you signed with the company (labor contract) is more important. Besides, I have a question. You mean you didn't sign an employment agreement or labor contract with the other party when you worked here? If not, you'd better sign one with the other party quickly, even if it's for the sake of your children not going to school and your future rights and interests. These all need to be signed. If it is a formal contract, then stamping is definitely not your project seal.
In addition, you can ask whether the school can stamp the project chapter. But I don't think so. Also, is it useful to ask the school to get a (TMD temporary residence permit or residence permit-I hate to say this word) or the neighborhood Committee to get a residence permit?