* Cap (Captain) "Cappy" Katz: The protagonist, a high school senior who is a bit of a goofball but has a good heart. He gets sent to a new school, "The Academy," after getting expelled from his previous school for some silly pranks. He is intelligent but not always serious, and he has a hard time adjusting to the strict environment of his new school. He is also struggling with his first real crush on a girl named Holly.
* Holly Hills: The love interest and a popular, intelligent, and talented girl. She is the first girl to really capture Cap's attention, and their relationship adds an element of romance and humor to the story. She is a bit of a rule follower, which is a bit of a contrast to Cap's rebellious nature.
* Dinkus: Cap's best friend and sidekick, who is known for his unusual antics and wacky ideas. He is loyal and supportive, and often gets himself into hilarious situations.
* Mr. "Big" Bigby: The tough but fair headmaster of "The Academy." He is a complex character who can be intimidating but also cares about his students. He is responsible for putting Cap through a series of challenges to learn responsibility.
* Mrs. "Sweet" Sweetwater: The head librarian at "The Academy," a kind and knowledgeable woman who becomes a mentor to Cap. She is also a bit of a mystery, as she has a hidden past that is gradually revealed throughout the story.
Supporting Characters:
* Ms. O'Malley: Cap's English teacher, who is strict and demanding but has a hidden soft spot for him.
* Roger: A rival student who constantly tries to undermine Cap.
* The "Gang": A group of students at "The Academy" who are known for their strict rules and their competitive nature.
* George: A quiet and observant student who becomes Cap's unlikely friend.
The characters in "Schooled" are all relatable and engaging, and their interactions and growth throughout the story make for a humorous and heartwarming read.