1. Too many subjects failed (failed), including missed exams, failed after retaking exams, or failed after retaking exams (failed in five courses).
2. If you don't reach the credits, you need to take the credits again. (Every school has different credits. Generally, if you don't get enough 50% of all the credits in that year, you will be demoted. Some schools stipulate that if the credit score is less than 30%, you will be dismissed.
It is normal to postpone graduation due to illness for physical reasons.
4. Delayed graduation due to changing majors. 3, 4 Although the graduation time is delayed, it is not a demotion.