This study was designed to explore characteristics of exceptional teachers of gifted students. Participants included 63 teachers and 1,247 highly able students. Teachers responded to 2 measures: a background questionnaire and the Myers Briggs Type Inventory (MBTI), a self-report personality inventory. Students also completed the MBTI. In response to the background questionnaire, the majority of teachers reported holding advanced degrees in a content area; most were not certified to teach and reported completing no formal coursework in gifted education. Results from the MBTI indicated that exemplary teachers were more likely to prefer N (intuition) and T (thinking), as compared to a normative teacher sample. The personality types of teachers were in many ways similar to the personality types of the gifted students. These findings suggest that teachers who are judged to be highly effective in working with gifted students prefer abstract themes and concepts, are open and flexible, and value logical analysis and objectivity. Results suggest that teacher personality and cognitive style may play a role in his or her effectiveness in teaching gifted students.