As the number of secondary CS teachers increases to meet the burgeoning course offerings in the U.S., teachers new to the discipline need additional supports beyond one-time workshops focused on particular curricula. To address this need, we implemented a year-long, equity-focused peer mentoring program with twenty-six teachers across one state. Participants met monthly to identify and work towards three goals related to the CSTA Standards for CS Teachers. Pilot data suggest that mentees increased in their teaching confidence but needed additional support to apply their learnings in their classrooms. We also identified several ways that our application process hampered our broadening participation goals by making it difficult for teachers working with rural, minoritized or low-income students to participate. In this poster, we will share lessons learned from our pilot and emerging findings from our second year of implementation.