How to write an apology message to the teacher when a child makes a mistake?

Dear Teacher X: Hello! I am the parent of XX, and I sincerely apologize for the trouble caused by XX's mistakes. I'm really sorry to bother you! Secondly, as a parent, I will try my best to communicate with my children and do their ideological work, so that they can know from the bottom of my heart where they are wrong and convince them. Realizing that he was wrong, the third child wrote a critical letter, promising not to repeat it in the future and study hard. I hope the teacher can give the child a chance to correct his mistakes. Please understand and accept my sincere apology. Thank you! X year x month x day XX parents: XXX