This paper explores the experience of three mentors working with a group of 12 practitioner action researchers; practitioners who were recipients of an Action Research Grant (ARG) in a programme initiated and managed by the Educational Institute of Scotland (EIS). The EIS is a trade union, which represents over 80% of Scotland's teaching professionals. The paper draws on these experiences, the views of participants and the research literature, to illustrate how action research, particularly that which is mentored by experienced colleagues, can empower teachers and enhance their practice to make positive difference to their learners and beyond and so becomes participatory action research (PAR).