Examining how departments in Hispanic-serving institutions (HSIs) construct supportive organizational cultures can offer insights on how other institutions can also build inclusive environments to promote minoritized student success, even in less diverse science fields. Studying the organizational behavior of HSI computer science departments committed to minoritized student success reveals that many faculty, administrators, and staff emphasize these students' assets and potential to develop talent in their discipline. Creating organizational structures where diverse departmental stakeholders share responsibilities to promote student success enables the development of multidimensional student support systems. These organizational behaviors demonstrate the potential to create sustainable cultures of student success, even in the face of unexpected disruptions like a global pandemic.