Recently, community psychologists have re-vamped a set of 18 competencies considered important for how we practice community psychology. Three competencies are: (1) ethical, reflexive practice, (2) community inclusion and partnership, and (3) community education, information dissemination, and building public awareness. This paper will outline lessons I-a white working class woman academic-learned about my competency development through my research collaborations, using the lens of affective politics. I describe three lessons, from school-based research sites (elementary schools serving working class students of color and one elite liberal arts school serving wealthy white students). The first lesson, from an elementary school, concerns ethical, reflective practice. I discuss understanding my affect as a barometer of my ability to conduct research from a place of solidarity. The second lesson, which centers community inclusion and partnership, illustrates how I learned about the importance of "before the beginning" conversations concerning social justice and conflict when working in elementary schools. The third lesson concerns community education, information dissemination, and building public awareness. This lesson, from a college, taught me that I could stand up and speak out against classism in the face of my career trajectory being threatened. With these lessons, I flesh out key aspects of community practice competencies.