College students can take the college entrance examination.
However, no school can admit you.
Because you have a student status and your file is in the university,
Other schools have no right to access your files (so-called filing).
So college students can take the college entrance examination again.
But you can only get one result, which has no reference value.
If you want to enter another university, you have to drop out first, or you won't apply.
Then take the exam.