Using data from the Head Start Family and Child Experiences Survey (FACES), Mathematica explores professional development among Head Start staff. The brief finds that training and conferences are the most common kind of professional development among program and center directors, although program directors are the most likely to report participating. The Office of Head Start’s Early Childhood Learning and Knowledge Center is identified as an especially useful technical resource, and there are few differences in the kinds of supports available across programs. However, smaller programs do struggle to provide some specific resources to staff, and the report concludes by recommending targeting additional resources to smaller centers, and center directors (rather than just program directors).