1, I think the first thing to do is to clarify your identity. Whether you belong to the establishment of a public institution or not, if you belong to the establishment of a public institution, then you are not subject to the provisions of the second paragraph of Article 2 of the Labor Contract Law and are not subject to the adjustment of the Labor Contract Law.

Resignation of staff in public institutions needs to fill in the resignation application and submit it to the unit for approval. Three months after the application, if the unit still refuses to go through the resignation formalities, the applicant for resignation may directly apply to the talent exchange service institution affiliated to the personnel department of the government at the same level for resignation formalities.

Labor arbitration does not apply to disputes between business personnel and units, and can only be resolved through appeals within the administrative system.

Internal administrative relations do not belong to the scope of administrative reconsideration and administrative litigation, and the court will not accept them. You can appeal to the administrative department of education.

2. If you are not a staff member of a public institution, but an employee, the provisions of the Labor Contract Law apply, and it is illegal for the school to detain your files. You can settle the dispute through labor arbitration.