Data-Based Decision Making in School Counseling: Utilizing Multiple Single-Case Indicators to Evaluate Interventions


  • Ryan J. McGill School of Education The College of William and Mary
  • Kelly S. Kennedy College of Educational Studies Chapman University
  • R. T. Busse College of Educational Studies Chapman University


school counseling, single-case design, intervention outcomes, effect sizes, evaluation


As the field of professional school counseling continues to move toward a data-based decision making model of service delivery, there is a need for dissemination of best practice methods for evaluating whether school-based counseling interventions are effective. In that vein, the purpose of this article is to review several methods of data-based decision making within a single-case outcome evaluation model, as well as their potential applications for school counseling interventions. To aid practitioners, the potential use of these methods is demonstrated in a case example and accompanying graphic displays.