This study identified what attributes principals believe best exemplify a teacher leader in schools implementing the Advancement via Individual Determination (AVID) program and what attributes they take into consideration when selecting an AVID elective teacher. After surveying more than 1,100 principals, we found that principals tended to rate teacher leadership attributes high in all areas, although they were not in agreement in the areas of professional growth and school/district environments. Respondents also did not consider all teacher leader attributes when selecting their AVID elective teachers. Principals may therefore see an immediate need for a high-quality teacher to teach the AVID elective class yet initially underestimate the importance of the teacher's role in AVID as a catalyst for schoolwide reform. (Contains 4 tables.)