The vagaries of hallway lengths mean Marcy is the first one into her last class of the day, which means she does a thorough check of the room before sitting down in the best seat. Getting to class early and getting the best seat is great, because it gets you out of the "take a bad seat and look weak/kick someone else out of a good seat and look like an entitled ass" dilemma.
It's a pretty normal classroom, with a place for a projected lecture at the front and a textbook . . . right there, of course. She opens it to the first page and starts trying to puzzle out the meaning from cognates and get a sense for the grammar beyond "verb goes at the end".