This study aimed to explore the effects of the education and training levels of top management teams in disability-based agencies on the organisational performance of those agencies. In this Thesis, it was hypothesised that disability-based agencies whose top management teams have greater levels of education and training perform better than disability-based agencies with top management teams with lesser levels. This enhanced performance may be mediated by the intensity of strategic planning processes and systems. This Thesis therefore dealt with the constructs of education and training of managers, organisational perfonnance, and strategic planning.