All high school students deserve access to experiences that will help shape their perspectives of post-secondary options. They also deserve adequate preparation for said experiences. Minimal consideration is given to how to prepare low-income Latinx high school students for success in internships. Thus, this mixed-methods action research study utilized a Youth Participatory Action Research (YPAR) framework to investigate a semester-long internship preparation course. It explored how students recognize and develop navigational capital from the Community Cultural Wealth (CCW) framework as well as Career Decision Self-Efficacy (CDSE) while preparing for a subsequent internship. Data analysis and its triangulation were derived from participants' interviews and a focus group, as well as surveys from the treatment group and control group. Results suggest that the intervention was successful in preparing participants for an internship and increasing their CDSE, but results were inconclusive on whether navigational capital was affected. [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.]