AbstractThe purpose of this study was to determine the procedures, implementation, constraints and efforts made in participatory decision making planned by the principal at SMA Labschool Kebayoran Jakarta. This study used a naturalistic qualitative approach with data collection techniques in the form of observation, interviews and documentation studies. Data analysis is done by data reduction techniques, data presentation, drawing conclusions and checking the validity of the data.The results showed that the Principal of SMA Labschool Kebayoran Jakarta always made a plan before making a decision by formulating in advance which decision-making procedures were relevant for each problem faced. The participatory decision-making procedures chosen by the principal vary widely, depending on the context. However, there are obstacles faced in the implementation of participatory decision-making procedures, there are teachers and employees who feel that participatory decision making seems slow and the presence of principals is relatively lacking due to their duties and responsibilities outside of school. The efforts made by the head are to give the maximum understanding to the teachers and their employees to prepare data before making decisions so that the impression of being slow can be minimized. In connection with the lack of attendance of school principals, it can be overcome by utilizing the delegation model to their representatives, and besides that, the principal uses the meeting time every week which is led by the headmaster himself.Suggestions in this study for several parties, especially to the principal in improving school productivity, namely the participatory leadership model in the decision-making procedures applied by the headmaster of the Labschool Kebayoran High School Jakarta to be further improved according to the situation and needs of the teachers and employees. Keywords: Parsitipative Leadership, Procedure, Implementation and Decision Making