How to write about graduating from the sixth grade?

a stranger in grade one, a friend in grade two, a partner in grade three, a confidant in grade four, a best friend in grade five, and a departure in grade six, I entered the classroom in six seconds, got acquainted with my deskmate in six minutes, got acquainted with the teacher in six hours, and got acquainted with the whole class in six months, but it took six years to know the separation, and a test paper scattered a group of people. There is a kind of goodbye that tells us to graduate. We have struggled for six years and survived 96 classes, 14 weeks and 12 semesters. At last, the only thing left is a photo and a goodbye. After six years of books, everyone has dispersed. There will still be people in this classroom next semester, but it's not us. It's time to get off.