Teacher’s pet
There’s always one student in every class who everyone leans on for notes. The student comes to every session and takes notes. He usually isn’t opposed to letting his friends share his notes with him, but when he starts to believe that others are taking advantage of him, his generosity ends.
Finally, he informed his classmates how irritated he gets when they rely on him for notes and use him as a source. You have power over the others because you’re the only student who takes notes, so you have responsibility. You may utilize it for good or give them a piece of your mind; this student decided to go with the latter option.