This qualitative study explored the supervision practices of graduate assistant supervisors at two large research institutions. Six themes emerged as best practices: graduate assistant supervisors took a student-centered approach, provided thorough training, cultivated a learning-focused experience, established effective communication, built strong relationships with the supervised students, and reflected upon and invested in their own supervision style and supervisory experience in order to practice a situational approach. [Note: The issue number (2) displayed on the first page of the PDF is incorrect. The correct issue number for this article is n3.]