Constructive Alignment (CA) is a pedagogical tool for designing student-centered instruction aligned to learning outcomes. Despite strong evidence that CA and student-centered instruction are superior to lecture-based pedagogy, the latter remains prevalent across higher education. This descriptive-explanatory case study (n=20) investigates how programs of reciprocal, non-evaluative peer observation can help faculty understand and use CA at the lesson level. Analysis of exit interviews and faculty-faculty dialogue reveals that participants are able to apply principles of CA at the lesson level; most report this is new learning. Two program features that support this learning are described.