National Board Certification (NBC) offers the highest certification possible to teachers who can meet the rigorous standards of this process. This certification develops reflective practitioners through a series of components designed to be used in authentic settings with students. Previous research shows the value of employing National Board Certified Teachers (NBCTs) for raising student achievement, creating teacher leaders, and developing a reflective culture in schools. Increasing the number of NBCTs could have a profound impact in our schools. This study explored the renewal rates and the perceived value of California NBCTs who certified in 2005 & 2006 using a survey created from two existing instruments. Both qualitative and quantitative data concerning initial motivating factors, renewal decisions and the benefits of holding NBC were collected. The analysis of the results indicated financial incentives were the number one reason for renewing. Conversely, the cost and/or lack of financial incentives ranked highest on the list for not renewing. While financial incentives were identified most frequently as an original motivator, the NBCTs in this study reported professional development as the most powerful effect of being a NBCT. A study of the literature demonstrated that the NBC process contains all of the components of quality professional development programs supporting this benefit and providing a program for structured professional development for districts and schools seeking a positive change in instructional practice.