1. Accents
The statement every international student gets tired of hearing is "I can't understand what you are saying." It's dreadful; it makes most international students frustrated and yes, you are frustrated too because you cannot actually understand, but at least try. Get them to talk slowly or use google translate. Just be as polite as possible.
2. Writing Papers
Come on dude, the British freaking colonized us. My paper is not trash because I didn't spell those words in the "American way."
3. Food
Why do international students crave food from home? Here is an article written by Jessica Stahl. Basically she points out that "food forms part of your identity and it is deeply tied to memory" so next time an international student complains that they are hungry and craving their home country's food, please don't look at them weird because chances are if you visit their home country you will probably be looking for a KFC, Papa John's or maybe a McDonald's, who knows?
4. Slang
When an international student (especially those in the country for the first time) is having a conversation with an American, a lot is happening in their head! Like, what the heck does "totes" mean? Is this person insulting my intelligence? Why do they keep saying "LOL" instead of laughing? What does "SMH" mean?
So if you're talking to an international student and they look confused, keep calm and try to use plain language, or even better, teach them those slangs. Trust me they want to learn! I mean that's why they came all the way to America to study, right?
5. Spring Forward and Fall Back?
What? Why do I have to change my clock every season? What is this? Explain! Most international students come from countries where the entire country is on the same time and they don't have to move the clocks back or forward, so things get complicated when they walk into class an hour late or early, because of daylight savings.