This study considers the role of teachers' multicultural awareness in promoting minority students' ethnic identity by considering the situation in one particular middle school. A case study of a Hani student is presented to show how teachers' multicultural awareness affects ethnic identity and the academic achievement of minority students. This case study enables the authors to assess the significance and value of teachers' multicultural awareness as an educational concept. Through the study, the authors point to a need to strengthen multicultural awareness in teachers' education to meet requirements of cultural diversity. The authors also emphasize that such awareness should be an objective of teacher training.