This study analyses exclusion, enrolment cancellation, and suspension rates in government schools in the Australian state of Queensland to investigate the impact of legislation to extend principals' disciplinary powers. Results suggest that the provision of alternative disciplinary options, including Saturday detentions and community service, failed to curb increases in the use of enrolment cancellations and exclusions as originally intended. Moreover, suspension rates increased at more than double the rate of enrolment growth during the same period. Year on year analysis of suspension rates reveals two specific calendar years and two particular grade levels in which there were very large increases. These calendar years coincide with two key education reforms in Queensland in addition to the extension of principals' power, indicating that the move to extend principals' disciplinary powers interacted with other major education reforms occurring within that same period. Grade level patterns indicate that education policy and school environments may play a role in rising school suspension rates.