The Head Start Health Services Competencies Professional Development Assessment (PDA) is a companion document to the Head Start Health Services Competencies: A Tool to Support Health Managers and Staff (The Competencies Tool). The Competencies Tool is a framework for identifying the critical attitudes, knowledge, and skills to implement effective health services. Attitudes refers to what an individual values; knowledge refers to what an individual knows; and skills refers to what an individual can do. The 68 competencies are organized into four categories. In the PDA, each competency has four levels of accomplishment along a continuum of strengths. Program directors, health managers, and health staff can use the PDA themselves and with the staff they supervise to promote successful job performance and support career development.