The purpose of this study is to determine the causes for high school students' decisions not to enroll in Honors or Advanced Placement (AP) courses. This study is a transcendental phenomenology whose participants are students who have been determined to be potentially successful in Advanced Placement classes by the "AP Potential" publication but who have chosen not to take any advanced classes. I will use an initial interest survey, individual interviews, and focus groups in order to gain knowledge from the students about their reasons for choosing not to participate in the Honors/AP classes. After coding the responses, I will have a record of the lived experiences of these students and will use the findings to determine the essence of that experience, thus explaining the phenomenon of underrepresentation at this high school. [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.]