You may enjoy some of these other humorous stories about kids in school, many of which are told in a diary format.
If You Liked Diary of a Wimpy Kid
The hand-lettered contents of a nine-year-old girl's notebook, in which she records her thoughts and feelings about moving, starting school, and dealing with her older sister, as well as keeping her old best friend and making a new one.
Fifth-grader Cody Carson keeps a journal of his hopes for a fresh start in a town where nobody knows about his humiliating mistakes of the past, but before school even begins so does his embarrassment.
In her diary, middle school student Jamie Kelly describes her life at home and at school, including her attempts to triumph over her nemesis, the beautiful and popular Angeline.
When Danny gets caught trying to cross his name off the "Geek" list in the girls' bathroom, he's sent to detention. Bullies torment him mercilessly -- until they discover that Danny can draw.
On his first day at Brooklyn's P.S. 858, fifth-grader Michael K. is teamed with two very strange students. While he gradually comes to believe they are aliens who need his help, he has trouble convincing anyone else of the truth.