Today was Jerome's first day at school. He forgot to clean his backpack, and he also forgot to take some stuff out that was not allowed at school.
Later in class
To not get in trouble, Jerome hid the not allowed items in his locker. Jerome knew that schools don't go through student's lockers normally, and at this school lockers were considered personal property. That meant that the school couldn't even search his locker.
Back at the lockers
Why would they look through my locker?
Jerome got in class. The teacher told the class that he wanted to help everyone be organized. To do that, he was going to look inside of their backpacks to see how organized they were. Jerome didn't think much of it, because Jerome was pretty sure he could just tell the teacher not to.
At home after school
Schools can't do that!
Without asking, the teacher dove into Jerome's backpack. Jerome saw how bad of a first impression Jerome has given his teacher. Jerome questioned whether the teacher could do that. It seemed like a violation of personal property.
When Jerome got out of class and went back to his locker, he found a note saying that his locker was searched and some items were removed. Jerome couldn't believe this school would just go through his stuff like it was theirs.
After school, Jerome went home to research about schools searching students. He found that what the school did earlier wasn't allowed. Schools can only search students if they have a "reasonable suspicion" that there might be something needed to be looked at or removed, or if the student gives them consent.