Answer:
Dear Mr. (last name)
I don't know where to begin when asked to write to you about my problems here in school. I can tell you this much, in that I deeply regret anything I said or did that caused disruption, whether it be in the classroom or on the grounds of (such and such High School). I am going to make it my personal mission to better my character and my performance in school. I am learning from my mistakes and I know I have a long journey ahead of me but, I assure you these problems will be amended. Thank you for your patience.
Sincerely,
(Name)
Step-by-step explanation: