Jess is mostly concerned about his popularity more than anything else. He seems to gain pleasure in ratting students out to the faculty or just being in an authoritative role. Ironically, he's extremely immature himself and I don't understand how he's a teacher at all.
He's your friend, then he will turn around and rat you to the faculty or students, just to make himself look 'cool' BEWARE
JOKER! The greatest don ever... along with P - jeremy