The Learning Assistant, Discussion Leader, and PINC (Promoting Inclusivity in Computing) peer mentoring programs at SFSU exist to help create and maintain inclusive learning environments and strengthen students' sense of belonging in STEM courses. Learning Assistants (LAs) gain teaching experience by participating in a physics or chemistry class where they help create a more active, inclusive learning environment for students, practice pedagogical techniques, and break down the power dynamic between the students and the course instructor. Discussion Leaders (DLs) and PINCs help small groups of computer science students with the course material outside of class and provide them with a learning environment that is absent of a strong authority figure, i.e. the course instructor. LAs, DLs, and PINCs are examples of peer mentors (PMs), and while the particulars of their roles are different, they all exist to strengthen student sense of belonging and promote inclusive learning environments at SFSU. PMs attend a one-hour, weekly pedagogy seminar where they learn inclusive teaching techniques that they can implement in their respective peer mentoring environments. The goal of this research is to qualitatively assess the PMs' experiences in their respective programs -including their shared pedagogy seminar -as well as the students' experiences having PMs for their classes. Through the iterative thematic coding of 9 PM interviews, 43 PM reflective essays, and 165 CSC 210 student surveys all from Fall 2022, I present an analysis of the efficacy of the Learning Assistant, Discussion Leader, and PINC peer mentor programs in strengthening student sense of belonging and creating inclusive classroom environments. I found that an overwhelming majority of PMs reported having benefited from participating in the program in several different ways, such as gaining confidence or becoming a better student. PMs also resoundingly praised their weekly pedagogy seminar; many even said they would participate in it in future semesters. The overall sentiment of the PM programs was that they were beneficial to the PMs, but a few of them did report some obstacles and challenges that they faced while participating and suggested improvements. The most prominent challenge/suggested improvement was that PMs wish for more structure and clearer expectations regarding their roles. Many felt that if their roles and responsibilities in the programs had been better laid out for them, they would have been more effective PMs. From the CSC 210 student sense of belonging surveys, I found the greatest contributor to student sense of belonging to be their discussion sections with their DLs. Several students even reported learning more and feeling more welcome in the discussion section than in lecture. These results provide us with an understanding of the importance of these PM programs at SFSU, as well as a vision for their future.