This case was originally designed for training international graduate students who are or will become teaching assistants (TAs); however, the case can be used in any TA or new instructor training forum with a diverse group of participants. The case showcases two teaching assistants to compare and contrast similarities and differences in communication effectiveness as well as to normalize experiences commonly encountered by TAs and new instructors. While English language skills may be one cause of miscommunication, there are also many other possible sources of miscommunication that can affect the teaching effectiveness of an instructor while interacting with and teaching undergraduate students. This case study offers suggestions for ameliorating miscommunication issues and addresses the need for more inter-cultural training opportunities by revealing strategies that can be implemented to improve teaching effectiveness.