In the third week of the second semester, students in our class read early on Friday morning five minutes in advance. The morning reading time itself is only half an hour, and it is even earlier. As a monitor, I not only failed to dissuade my classmates when they left, but also asked them to leave voluntarily. Other class committees did not realize the dissuasion and left on their own. This is also my bad teaching to them on weekdays, which leads to poor discipline and responsibility of the class Committee! Without a strong sense of responsibility, the work style of the class Committee is not in-depth and practical. No matter how many reasons there are, we should correct our work attitude and strictly abide by the rules and regulations of the college. There is a French proverb that "the devil comes from the details", and a detail can show the overall class spirit and study style of a class. The class style and style of study that are not valued in early reading will not be excellent! Our city class two slogan "city class two, extraordinary strength;" City class 2, management mode. " The slogan is so loud, but you can't even read it for half an hour in the morning. How can it be said to be a management model? This problem deserves our class committee's deep thought! In this critical letter, I seriously pointed out the mistakes made by our class, and I also want to thank Mr. Tan for pointing out the mistakes for us in time, otherwise we will continue, and the mistakes will be more than that! After this incident, we also deeply realized the seriousness of our mistakes. As a monitor, I am also very guilty. I regret writing this critical letter, hoping to get the teacher's forgiveness on behalf of the whole class and be willing to accept the punishment given by the teacher. Here, while writing a critical letter to the teacher, I also express my heartfelt thanks to you.