The purpose of this study was to identify the relationships of self-efficacy, self-advocacy, and professional development opportunity of special education teachers in a suburban public high school in Western, Connecticut. The problem to be addressed is that as the need for qualified special education teachers increases, the number of qualified special education teachers available for hire is decreasing. As more positions are vacated, children will not have the benefit of a special education teacher and may receive instruction from a substitute. A correlational analysis design was employed for this study and explored relationships between variables using correlational and descriptive statistical analysis. The participants for this study were drawn from a suburban high school in Western, Connecticut. Thirteen special education teachers with Connecticut Special Education certification and currently holding a teaching position were sought out to participate in the study. The data was collected through three surveys given to the proposed target population. Twelve special education teachers completed the Special Education Teacher Retention Survey, the Teacher's Sense of Efficacy Scale (TSES), and the Job Satisfaction Index via Survey Monkey. The research questions for this study focused on the correlations of self-efficacy, self-advocacy, and professional development for high school special education teachers. A weak positive correlation was found in regards to the variables of self-efficacy and professional development and a positive correlation was found with the variables of self-advocacy and professional development. There was no correlation found with regards to experience and self-efficacy and professional development. Descriptive analysis revealed positive responses with regards to individual items. Future research recommendations would be to consider more than one school in several towns similar to the one in the current study to enlarge the participant size. [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.]