Your file can't be taken out without the approval of the original unit and the higher education department. You can register and take exams, but there are still a series of things after you are admitted.
Extended data
The establishment of teachers is equivalent to the establishment of public institutions, and now there are also contract teachers applying.
First, the establishment of teachers belongs to the establishment of fully funded institutions, enjoying and fulfilling the benefits and obligations of "five insurances and one fund", including medical insurance and housing accumulation fund. To put it bluntly, it means spending less or no money to see a doctor, facilitating housing loans and so on. Most of the insurance premiums and provident funds are paid by the unit.
Second, the teachers who set up the file card enjoy various allowances, benefits and bonuses, and some areas also enjoy performance pay. The state is gradually realizing the policy that teachers' salaries are close to those of civil servants.
Thirdly, it is difficult for teachers with an establishment to lose their jobs, and they will hardly lose their jobs, because they are state workers, commonly known as iron rice bowls. If you don't make mistakes, you won't leave your job unless you want to quit.
Teachers who are not prepared, commonly known as substitute teachers, that is, temporary workers, enjoy little social insurance except meager basic salary and a little welfare, and have no status and priority in learning and development. In fact, the situation of substitute teachers is far below what I described. In addition, there is another kind of teacher who is a teacher in a private school. They have few state establishments, but they have their own school establishments and enjoy the rights and obligations of formal enterprises.
References:
Baidu Encyclopedia —— Teacher Establishment Management