Penomniscient

Someone who knows a lot academicly. Being (really) school smart, also known as nerdy. Not a know-it-all but a know-it-most.

Teacher: 55
Geek: Uh? look at my clothes, I'm smart.
Teacher:71
Nerd A (with stylish clothes): Aw man! that is the worst grade I got so far. At least I don't have to repeat the grade like that geek.
Nerd B: Wow! You're penomniscient!
Dumbshits: Hahahaha! (snickers under their breath).