TY - JOUR AB - Purpose The purpose of this paper is to explore the ways in which external subject-specific mentoring can influence the professional identity construction of early career physics teachers (ECPT).Design/methodology/approach The methodology evolved from the evaluation of a mentoring project, involving semi-structured interviews with a number of early career teachers. Responses from 18 teachers, which related to the impact of the mentoring relationship on their professional identity development, were subject to a process of iterative thematic coding in the context of interpretative repertoires via a collaborative “developmental dialogue” between the managers of the mentoring project and its external evaluators.Findings The analysis of participants’ responses suggested that the nature of the relationship between early career teacher and mentor played a role in the emergence, or suppression, of their professional identities as physics teachers at the start of their teaching careers. In some cases, mentoring provision was little short of a “lifeline” for the teachers.Practical implications Mentors need the opportunity to develop their professional practice and identity through contact with the community of teacher educators. The practice of training, mentoring and coaching teachers should be valued at least as much as teaching itself and should be recognised as its own professional practice.Originality/value This study builds on a number of well-established pieces of research and concepts relating to the challenges facing early career teachers and their professional identity construction. It provides insight into the challenges facing ECPTs specifically, which includes the risk of isolation and unrealistic expectations from colleagues. It not only confirms the merits of external mentoring, but also demonstrates the significant responsibility, which comes with the mentor’s role and the negative impact on teachers’ professional identity construction caused by deficiencies in mentoring. VL - 6 IS - 2 SN - 2046-6854 DO - 10.1108/IJMCE-01-2017-0003 UR - https://doi.org/10.1108/IJMCE-01-2017-0003 AU - Cameron David AU - Grant Anna PY - 2017 Y1 - 2017/01/01 TI - The role of mentoring in early career physics teachers’ professional identity construction T2 - International Journal of Mentoring and Coaching in Education PB - Emerald Publishing Limited SP - 128 EP - 142 Y2 - 2024/04/25 ER -