The problem of practice addressed in this mixed-methods research study is assessing whether participating in professional development workshops helped community college instructors improve their pedagogical practices, leading to improved student success and achievement rates. In this study, I explore the effects of an intervention I designed to help English 101 instructors teach a new, direct-placement composition class, which was created to comply with the mandates of AB-705, an educational reform bill in California. I used three guiding theories to undergird and evaluate the intervention: Darling-Hammond et al.'s Accountability Approach (2014), Freire's Critical Pedagogy (1970), and Kirkpatrick and Kayser-Kirkpatrick's Model of Training Effectiveness (2009). To address the research questions of this study, I analyzed pre- and post-surveys, faculty interviews, and student success and retention data. The results from the data were mixed. While the quantitative survey data did not support the claim that the College of the Canyons (COC) SkillShare Workshops affected instructors' attitudes about teaching and their teaching behaviors, the qualitative interview data showed that the workshops did improve instructors' professional capacities and were a valuable professional development resource. Additionally, the quantitative institutional data demonstrated that workshop participation significantly increased instructors' student success and retention rates. [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://www.proquest.com/en-US/products/dissertations/individuals.shtml.]