A competency-based training course was designed to prepare Professional Development Center (PDC) instructors for the certification process. After an exhaustive review of the literature, it was determined that a relevant training course that would specifically reflect the needs of the PDC was not available. The decision was then made to design a training course that would serve as a frame of reference for instructors to evaluate themselves and improve their classroom skills and subsequent certification scores. Appropriate design elements and content were selected that were suitable for inclusion in a competency-based training course grounded in the principles of adult learning. During the development of the training course, a survey was conducted to rank order the competencies that were taken from the instructor assessment instrument that was approved for use in 1995. Although the training course was designed to allow for competency-based exposure and practice of instructor performance in the classroom, the preliminary field test supported an additional use for the course. The training proved effective as a self-assessment tool that permitted certified and uncertified instructors to identify performance areas that required professional development. (Appendixes include the instructor assessment instrument, train-the-trainer lesson plan, PDC training evaluation form, and participant comments. Contains 20 references.) (YLB)