
The math department stinks for undergraduates: most classes are taught by teaching assistants who don’t speak English well. Some professors teach those classes, though, so when you sign up you need to make sure that there’s a professor’s name next to the class; otherwise, a TA is probably teaching it and that might make the class difficult for you.
Besides, because the school is so big,
you will not get to know your teachers unless you make an effort to get to know them because they will not make an effort to get to know you. So far, I have had mostly lecture classes that are a hundred people or more. If you want to be accounted for, you must make it happen!