Teacher expectations are important for students academic achievement or success in schooling. However, there is a paucity of empirical research to examine how school-level variables have a structural influence on teacher expectations, particularly group-level teacher expectations. In this vein, this study examined how principal support, professional learning community, and collective responsibility have a structural relationship with group-level teacher expectations by using a structural equation modeling. The participation of this study was 1,747 subject(Korean, English, and Math) teachers working in 174 general high schools. Based on the result of the study, we found that principal support had only indirect positive effects on shaping group-level teacher expectations through professional learning community and collective responsibility. Namely, the direct effect between principal support and group-level teacher expectations was not statistically significant. As a policy implication, we suggest that school principals should make an effort to create a positive school climate or an indirect intervention in order to effectively promote and shape the educational expectations of teachers.