This paper describes research on how curriculum reform provides novel conditions for influencing teacher professionalism. It draws on Bernstein's theories of the 'classification and framing' of curriculum and theories of teacher professionalism to investigate the impact of curriculum reform on teacher professionalism. The research was conducted in Indonesia during the implementation of a school-based curriculum that grants teachers greater autonomy to develop curricula appropriate to their context. A second concurrent reform introduced a character education policy that requires all teachers to address a specific set of values in all classes. Teachers working in public and Islamic private secondary schools were interviewed to investigate the degree of professionalism they exercised when implementing these reforms. Although theories of curriculum reform suggest that the higher degree of autonomy offered by a school-based curriculum has the potential to re-professionalise teachers, this study observed different outcomes for teachers in different workforce environments in Indonesia.