I have an issue with someone in my group project (a non-ESL student who writes in broken English)
Is this the right SE for this? Is there even an SE for this?
In most cases, questions about interpersonal interaction in the classroom or classwork should be discussed with the class instructor. It might be appropriate to ask about here, but if you have not asked your instructor first, it would be reasonable for people to downvote your question for "not showing any research effort."
"requirements and expectations of students" are on topic, but "content of coursework" and "undergraduate culture" are off topic.