"Decision Making - A leadership Model" discusses the components of administrative judgement and critical thought in the decision-making process. It is then directly applied to the preparation of our educational leaders. Current literature and research is reviewed as indicating that many errors are made in judgement in the decision-making process. This paper discusses the literature and enumerates the safeguards that may be used by the site administrator to overcome the use of availability and representative heuristics in reaching practical decisions at the school site. Also held to exploratory examination are the methods that may be employed to allow transference of these principles to inspire critical thought in our students - the leaders of tomorrow