stealth mining?

there's an asshole teacher at my school who constantly bullies me, so i want to sneak into her laptop and install a hidden monero/bitcoin/ethereum miner that mines coins in a stealthy way and sends them to my wallet, preferably through a pool. thread usage must also be variable (i don't want it at 100% because then she will clearly notice, i'm thinking 30-40%). any ideas on how i can achieve this?

You would get into serious trouble if you get caught. You have to be clear about that. However, to stay ontopic, maybe send a file to your teacher which contains the silent miner?

a) It's illegal and you'll get in serious trouble if you're getting caught
b) Just google for a silent miner
c) Well, you're banned anyway so the answer is unnecessary anyway I guess

lol dont do this lol, he will probably notiece it and trust me they know how to get the logs checked out...
you will probably get busted if they want to find out who did it and wont even make 5$