Purpose: The primary purpose of this study is to test the measurement invariance and the latent mean differences of the personal accountability measure (PAM) constructs. Design/methodology/approach: Obtained through the Turkish version of the PAM from a random sample of 453 teachers working in elementary and secondary schools in Aksaray province, data were analyzed using multigroup confirmatory factor analysis (CFA) to test the measurement invariance and latent mean differences of the internal and external accountability constructs across gender, tenure, school grade and teacher branches, respectively. Findings: Teacher internal and external accountability constructs were demonstrated in this study to be fully equivalent across gender and tenure, and partially equivalent across school grade and teacher branches. Latent mean comparisons showed that less-experienced tenure teachers, class teachers and ESL teachers in Turkey felt more internally accountable compared to their peers in other groups. No significant latent mean differences of teacher external accountability were observed across genders, tenures, school types or teacher branches. Originality/value: This study contributes to research by providing further valuable information on the equivalencies of the external and internal accountability constructs across gender, tenure, school grade and branch for future research studying multigroup comparisons and structural relationships of personal accountability constructs. It also provides school principals and policymakers with more accurate, multigroup comparisons of teacher external and internal accountability dispositions across gender, tenure, school grade and branch.