Reading progress update: I've read 9 out of 165 pages.

"Wyatt, what's up, Slim," Justin Gregory called out as he made his way toward us.
Wouldn't you either call him "Slim" or "Wyatt"? Not both? I assume the guy would know you're talking to him no matter what?
Also, the MC told me this classroom would probably be completely empty for four minutes, but it's actually been more like ten seconds and people are pouring in. This girl has a terrible grasp of time.