How to write an explanation (written criticism) about campus violations?

For example: Dear school leaders, teachers and class teachers:

I made such a mistake because I didn't realize the seriousness of the matter and my self-control was not strong. Now, under the education of teachers and leaders, I finally realize the seriousness of my mistakes, and I am very ashamed of my mistakes. I hope teachers and leaders can give me a chance to correct my mistakes. I will definitely repent my mistakes and feel that I won't make similar mistakes again.

so far

welcome

Name XXX

According to my personal situation, the review of my reading career is almost a book.