In order to address the managerial leadership challenge of the educational psychologist cohort, it seems fundamentally superficial to make direct use of conventional management theories, scientific data, and empirical evidence from managers’ work practices in other contexts. The current research explored the influence of managerial leadership on the professional performance of educational psychologist in relation to service delivery models, management appointments, workload management and educational psychologists’ engagement in clinical supervision. Managers need to gain better understand of the influence of managerial leadership on the professional performance of educational psychologists and use contemporary empirical and scientific data to guide their managerial leadership practice. The explanatory sequential mixed-methods research approach was best suited to the early stages of research in this arena. The research findings elucidated the influence of service delivery models, described the ideal management appointment, proposed a formal structured workload management system and provided activities for managers to encourage educational psychologists’ engagement in clinical supervision. / Educational Leadership and Management / D. Ed. (Education Management)