There may be many reasons why the make-up exam results show 0 points, which need to be analyzed in detail. There are several possible reasons for this problem:

1. Didn't take the make-up exam: If the students didn't take the make-up exam, the score would naturally be 0.

2. Cheating in the exam: If a student is found cheating in the make-up exam, the school may cancel his score, resulting in a score of 0.

3. Error in entering scores: Sometimes, the school may make mistakes when entering make-up exam scores, resulting in a score of 0.

4. System failure: The school's system may fail, resulting in failure to enter or display scores normally.

If students show 0 points in the make-up exam results, they need to contact the school in time to verify the specific reasons. If there are problems in your grades due to your own reasons, you need to correct them in time and abide by the relevant regulations and systems of the school.