every start of a school year I identify which classmate is good at specific subjects and befriends them and use them as a stepping stones

every start of a school year I identify which classmate is good at specific subjects and befriends them and when there is no one good at a subject, I try my best to dominate that one particular subject and then I trade my answers for other answers on a different subject and since no one is good at the subject I'm good at (math) I get whatever answers I want on all subjects since I'm the only one who's good in math making my way to being an academic achiever. Sometimes I give them the wrong answers on math just to get a slightly higher score and when I notice that the answer they gave me is wrong sometimes I don't tell them or correct them to be higher than them but sometimes I do correct them and because of this I easily made my way to always being the top of my class and here's what's crazier, they don't view me as a "cheater" cuz I'm "smart" on math and that I deserve it without them even noticing I'm using them as a stepping stones. I know it's wrong but I chose not to stop cuz it works

First time using reddit and sorry if my grammar is bad