The article presents a conceptual model of effective school leadership which is based on the experience and knowledge gained from research work done with high-performing principals in the Jamaican school system. The basic and underlying premise is that to understand how leadership works, it is essential to explore the dimensions, components, and elements which shape and inform the behavior of the leaders. The article also presents the conceptual framework for the model and elaborates on the six dimensions which are the basis for analyzing and synthesizing leadership practice. The model would be useful as a diagnostic tool, and a guide for recruiting and developing training programs for principals.