Background: Previous research has indicated that placing emphasis on communal goals within the field of science, technology, engineering, and mathematics (STEM) education can yield beneficial learning outcomes. However, there remains a relative dearth of investigation into the factors that contribute to the success of STEM education programs integrating communal goals. In the present study, we sought to explore the roles of two constructs that prioritize the interests of others, namely empathy and citizenship, in promoting STEM learning perseverance within the context of a STEM-based community service learning (CSL) program. Specifically, we proposed that empathy would be associated with STEM learning perseverance through its relationship with citizenship, within a sample of 275 secondary school students from Hong Kong who participated in the said program. Results: Using structural equation modeling (SEM), the results revealed that empathy is significantly and positively associated with STEM learning perseverance, both directly and indirectly, through citizenship. The results held even after controlling for the demographic variables of school membership, gender, and age. Conclusions: This research highlights the association between understanding the needs of the community (empathy) and students' desire for community involvement (citizenship), which subsequently influences their perseverance in STEM learning. This relationship is particularly pronounced in educational settings where communal goals are emphasized.