The purpose of this study was to explore and report on the impact of coaching as an embedded part of professional development has on teacher learning and practice in the context of educating English Language Learners (ELLs). A close examination was made of what teachers, coaches and principals believe to be effective professional development and how the relationship between a coach and teacher affects understanding of and classroom practice with a specific population of students. The research questions were (a) How can coaching support implementation of professional development goals over traditional development activities as reported by the teacher, coach and administrator? (b) What is the relationship between the coach and teacher? (c) How does the coaching process relate to self-reported coach and teacher knowledge of instruction and practice in the ELL context? I used a qualitative approach to gather data through classroom observations and in-depth interviews. The 17 participants came from Title 1 elementary schools with high ELL populations located in the central and west valley of Phoenix, Arizona. I analyzed the data deductively then coded and categorized participant responses in relation to the literature on professional development and coaching. The findings indicated that those involved perceived embedded coaching as an effective component of professional development. What I have now termed based on my study as Professional Development Praxis (PPD). They agreed that with a structured system of coaching in place, both teachers and coaches increased their knowledge of how to best instruct ELLs as well as enhanced their ability to put research-based strategies into classroom practice. The recommendation of this study is that districts, schools and professional developers provide training and support for educators in a meaningful, effective and student centered way. Professional development were educators are provided knowledge about ELLs, opportunities for practice of what they are learning in and out of training sessions and on-going collaboration and support as they work with their students. It is the job of everyone involved in the system to better prepare educators to meet the critical needs of students who come to school with specific linguistic and academic needs. [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.]