The practice of using teacher leaders to support and develop teachers from within the educational organization is gaining support from research. The Trainer of Trainers (TOT) model of professional development is one practice used to develop educators. This study focused on the perceptions of teacher leaders within the TOT model. Teachers' perceptions were studied regarding professional development received from teacher leaders as a result of two TOT learning opportunities. Student interviews offered insight into the transference of strategies from the TOT to classroom practice. Qualitative research was conducted through interviews, observations, reflections, and professional development artifacts. Findings support the use of Adult Learning Theory practices during TOT opportunities. Teacher leaders and teachers prefer professional development opportunities in small, manageable chunks which allows time to absorb material, practice within the classroom, and receive feedback regarding implementation of new instructional practices. [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.]