Jiang Cheng bends over his paper and begins to furiously take notes. 

Wei Wuxian tries to take notes and manages to for almost three entire minutes before he folds all of his notes into a paper flower. 

Ribo takes notes intermittently when there's a concept she wasn't already familiar with or if something is explained in an interestingly new way.

Hey! There's no teacher in this classroom! 

He starts to pace around the room in circles.

"Jiang Cheng, I'm booooooored."

"Then pay attention, you idiot."

"But I know all this already."

"Shhhhh!" says a senior taking notes.

Ribo will not giggle, that would make a bad impression on the seniors and she is not an enclaver. She does smile just a little though, it's like something from one of those TV shows where kids are in school.

"Then work on a problem set! The problem sets are in the book!"

"Oh, they are? Awesome!" Wei Wuxian proceeds to sit down and work on problem sets, except when he gets stuck or distracted and returns to pacing in the back of the room.

Ribo isn't quite excited enough about Calculus to do problem sets she hasn't yet been assigned. When the lecture is particularly boring she'll trace shapes on her desk with her fingers. She'd doodle but paper isn't unlimited here.

When the lecture finishes, Wei Wuxian says, "do you think if I work far enough ahead I can just skip class?"

"No! You'll get eaten."

"Maybe I can bring a book."

Ribo thinks that's probably reasonable though maybe there will be important information in the boring lecture. Apparently that's true for history. She doesn't interrupt class to express this though.