Generally speaking, the number of defense opportunities for graduation thesis opening report is determined by the regulations formulated by the school. Different schools may have different regulations, so if you want to know the specific number of defense opportunities, you'd better consult the academic affairs office or graduate school of your school directly.

But the rule of most schools is to give students two chances to reply. If the first defense fails, students can make amendments and improve before making a second defense. In the second defense, the students' scores meet the requirements before they successfully pass the defense of the graduation thesis opening report. If the second defense fails, it needs to be further dealt with according to the regulations of the school.

It should be noted that the more defensive opportunities, the better, because defense takes a lot of energy and time. It is very important to get your thesis passed as much as possible in the first defense, so as to avoid wasting time and energy in the second defense.

In addition, it should be noted that although the number of defense opportunities for graduation thesis opening report is stipulated, it is not fixed, subject to the arrangement and regulations of the school. Under special circumstances, the school can adjust the number of defense opportunities according to the specific circumstances.

For example, if a student has received the guidance and support from the instructor and the defense committee before the second defense, made sufficient revisions and preparations, and can prove that he has met the defense requirements of the graduation thesis opening report, and the school thinks that he can pass it directly, then the school can reduce the defense opportunities according to the actual situation and directly pass the graduation thesis opening report. On the other hand, if students are not fully prepared for the opening report of graduation thesis and fail to meet the requirements in the first defense and the second defense, the school can deal with the students' graduation thesis according to the regulations, such as extending the time and rewriting the thesis.

Therefore, when preparing the opening report of graduation thesis, students should take it seriously, make full preparations and revisions in advance, ensure their ability to pass the defense, and avoid wasting the number of defense opportunities. At the same time, if there are special circumstances that need to be postponed or handled separately, you should report to the school and the instructor in time for help and guidance.