This study aimed to verify how the teachers from an Elementary Public School perceived their practice during the implementation of the Nine-year Elementary School, and to know the teachers' opinions about the policy mentioned. A group of 10 teachers was surveyed by the researcher for four semesters. The procedures used were individual interviews and field notes from a research diary. The results indicated the importance of the educators' participation in the discussions about the implementation of an educational policy and the preparation of the school for the proposed changes, and ways of the teachers' participation (immobilization, critical opinions and actions) concerning the problems. The psychologist's practice was to develop the teachers' awareness about the oppressive conditions, but the group did not recognize their political potential to change the reality.