Purpose: Relatively little is known about how principals make decisions about teacher hiring. This article uses mixed methods to examine what characteristics principals look for in teachers. Research Methods: Data were gathered using a mixed method approach, including in-depth interviews with a representative sample of 31 principals as well as an online survey of 368 principals in the Chicago Public Schools. Data analysis techniques included both qualitative analysis to look for patterns and themes and exploratory regression analysis of surveys to examine variation in preferences across school and principal characteristics. Findings: Results indicate that principals focus on behaviors and skills rather than qualifications. Principals report looking for teachers who care about students, have content knowledge, are willing to go beyond contractual obligations, and have classroom management skills. Principals, in general, talk extensively about caring, classroom management, and willingness to "give extra," while most say little about content knowledge or teaching skills. Preferences vary substantially across low- and high-achieving schools. Implications: Whether the skills and behaviors that principals report focusing on during the teacher-hiring process are those that will benefit their students most is an important question, particularly because even ineffective teachers are rarely dismissed from public schools. (Contains 4 tables and 5 notes.)