: The aim of the study was to find out the formulation for implementation and evaluation of strategy which were done by the headmaster in order to increase teachers' performances at SDN 2 Pagar Air Aceh Besar. The study was a descriptive qualitative study. The data were collected through observation, interview, and documents. The subjects of the study were the headmaster and the teachers.The results of the study showed that (1) the headmaster has formulated several ways to increase teachers' performances : conducting academic supervision activities,assigning teachers to seminars and workshops, assigning teachers to join to KKG and MGMP activities at gugus (group of schools in a district). (2) The academic supervision was conducted through direct supervision in the classroom and provided help when needed. Next, the headmaster motivated and obligated teachers to join to KKG and MGMP activities. (3)The evaluation of strategies was done by conducting a meeting with teachers and stakeholders at the end of semester.