School counselors are mental health professionals who support students' emotional, academic, and social development. Numerous studies have documented outcomes to support the efficacy of school counselors. To excel in student support services, counselors should possess a diverse set of skills and attributes to successfully assist and guide students. Defining clinical skills for school counselors helps to ensure that they are equipped with the appropriate knowledge and competencies to provide effective support to students, establish a professional standard of practice, ensure school counselors are accountable for their work, and establish recognition as legitimate mental health providers working in schools. The purpose of this Delphi study was to establish a consensus definition of clinical skills for school counselors. Delphi research is a structured forecasting method that involves input from a panel of experts through multiple rounds of feedback. This Delphi study consulted 22 field experts with advanced degrees, extensive school counseling experience, recent field research, and leaders in professional organizations to achieve consensus. Three open-ended research questions produced ten themes surrounding the clinical skills of school counselors. In the three phases of the study, responses from the panelists were analyzed and resubmitted to the same participants for review. Quantitative data included the measurement of central tendencies with dispersion, percentage, and frequency of responses. The panel produced consensus on ten skill domains to define clinical skills for school counselors. The counseling implications are also discussed. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]