The purposes of this study was to obtain a greater understanding of the consequences of teacher organizational citizenship behavior (OCB) for the teachers who perform OCBs in prevention education as well as for their classrooms and schools as perceived by the teachers and the principals themselves. Based on semi-structured interviews with 30 highschool teachers and 10 principals in the Israeli educational system, the present study found both positive and negative consequences of teacher OCB in prevention education. Among the positive consequences are self-fulfillment, social acknowledgment of the teacher's unique contribution, high levels of trust toward the teacher, and a sense of professional effectiveness. Among the negative consequences are negative relationships with colleagues, depletion of personal energy, and limited time with the teacher's family. Theoretical and practical insights are provided.