As a partner of the International Teacher Leadership project (ITL) proMENTE social research implemented teacher leadership support program for the first time in BiH. Teacher leadership is seen as a mean to strengthen teachers' professionalism by enabling them to feel that leadership is part of their work. Training program is about teachers taking responsibility for leading change and making a difference in professional practice and development of professional knowledge. From September 2010 until July 2011, proMENTE provided teacher leadership support program for 40 teachers from nine schools in Sarajevo Canton.