This paper is a commentary on how the student population of Canadian universities has changed with the arrival of international students. It discusses some of the issues that instructors have when teaching and interacting with their international students such as overcoming the language barrier, and being aware and respectful of cultural differences. It provides insight into some of the difficulties that instructors can face, and how they can adjust and adapt their teaching methods so that their international students can be successful. Topics discussed include: how essential it is that instructors understand students' educational backgrounds and how they differ from Canadian students' experiences; how students view academic integrity policies based on their prior knowledge; how international students tend to be passive learners instead of active learners in the classroom; how their reluctance to participate in group work can impact their class participation; how instructors need to explain to their students what is involved in learning how to conduct research; and how their reliance on the class textbooks for information impacts their ability to take in information during the lecture.