The relationships between stress and psychological distress were investigated among a cohort of trainee secondary school teachers in England. Specifically, the study examined the structure of a Teacher Stress Scale and its relationship to mental health as measured by the 12-item General Health Questionnaire. Three factors were identified: behaviour management, workload, and lack of support. Differences were identified between men and women in respect of stressors and psychological distress. Stress attributed to pupils' disruptive behaviour and stress attributed to perceived occupational stress were found to be significant predictors of psychological distress. The findings are discussed in relation to the degree to which trainees are prepared for the challenges they are likely to experience as teachers. (Contains 5 tables and 1 figure.)