Dear teacher, I hereby write a letter of self-reflection to express my apology and regret for my mistake. I know that my actions not only violated the school rules, but also hurt the rights of the students and brought unnecessary trouble and losses to you and the class. I feel deeply guilty and regretful about this. I also regret not listening carefully and putting my studies first. I am deeply aware of my mistakes and understand my responsibilities. I'm deeply sorry for the inconvenience my actions have caused everyone. I promise not to make the same mistake in the future. I will listen carefully and study hard to be a good student. I hereby apologize to the teacher and the class and promise that I will not go online to seriously complete the homework assigned by the teacher and actively participate in class activities. I will study hard to get better grades to make up for my mistakes. Once again, I apologize to the teachers and the class for your education and guidance. sincerely salute XXX