Undergraduate learning assistants (LAs) are near-peer instructors that facilitate learning by engaging in student-centered, active pedagogies, and often engage in more direct contact with students than faculty. Despite their important role in STEM classes, little is known about how ULAs understand and practice equity. Instructors’ understanding of ‘equity’ directly impacts their teaching practices. Instructors with ‘equality’ based conceptions of equity that prioritize fairness and treating each student the same are more likely to adopt didactic, instructor-centered teaching practices that have been shown to less effective than other approaches, with disproportionate impacts on students from minoritized backgrounds. Further, in making sense of racial disparities in their classes or disciplines, STEM faculty often draw on color-evasive narratives that explain racial phenomena without explicitly naming race or racism as a cause of oppression and these beliefs are associated with a reduced ability to notice racist events in the classroom and with the adoption of harmful equality-based approached to teaching and mentoring. STEM faculty are not alone in drawing on color-evasive narratives. Undergraduates also hold these beliefs, and those that do are less likely to recognize microaggressions or to find them problematic. Thus, we ask (a) How do STEM ULAs at a Mid-Western primarily white institution conceptualize equity in their role as educators? (b) How do ULAs conceptions of equity influence their self-reported teaching practices? We hypothesized that a majority of LAs will draw on color-evasive ideologies, and those that do will be less likely to notice racist events in classes, more likely to perpetuate inaccurate descriptions of their classes as neutral and objective and more likely to endorse teacher-centered practices. Drawing on frameworks of color-evasive racism, Haynes’ White Racial Consciousness and Faculty Behavior model and the four approaches to equity proposed by NASEM, we qualitatively coded the data from surveys and interviews to assess LAs’ understanding and practices of equity. We find that LAs engage with color-evasive in several ways: They explain racist classroom events without naming race or racism, ascribe to equality-based understandings and practices of equity or inclusion-based understandings and practices that focus on individuals’ characteristics and needs while ignoring historical, sociopolitical and systemic causes of inequities. By delving deeply into how STEM ULAs perceive and implement equity, our work informs future interventions and training programs to enhance equitable teaching practices in STEM education. This work is supported by a Creating Inclusive Excellent Grant from Michigan State University. This is the full abstract presented at the American Physiology Summit 2024 meeting and is only available in HTML format. There are no additional versions or additional content available for this abstract. Physiology was not involved in the peer review process.