The relations between educational research, policy, planning and implementation in Thailand are the topic of this paper. The major focus is on the research/policy linkage. A complex educational administrative structure and a pluralistic informal power structure characterize the Thai research context. A tetrahedral model of linkages provides the conceptual framework for the analysis. Details are then provided with respect to the actual operationalization of the model in terms of the Thai approach in practice. Major elements in the Thai approach include the use of expert policy committees, joint committees involving both administrators and researchers, problem-oriented seminars, and commissioned research. Actual examples of research efforts described are an educational reform study, local level school mapping, a school cluster experiment, a budget exercise to improve the equity of primary school resource allocations, and a policy evaluation of sub-district secondary schools. Finally, lessons to be learned from the Thai experience are summarized. Thailand has experienced some success in building analytical educational research capacity and ensuring its utilization. Key elements in this success have been an emphasis on strengthening human capacities; judging political will in a timely, flexible manner; creatively utilizing bureaucratic forms such as committees; and remaining both politically detached and sensitive.