Other students transfer from one public four-year institution to another or from public to private institutions. The State Policy on Transfer provides the framework for transfer. Admitted transfer students may need to take certain prerequisites for upper-division majors.
Additional details are in the policy.
If you attend one college with the intention of applying to or graduating from another college, you should find out what that college requires and take as many of those courses as possible. The chief transfer officers at each institution are good contacts for transfer information about that institution.