This study employs the pseudopanel approach for estimating returns to education in Thailand, while treating the endogeneity bias common to estimates from data on individuals. Pseudopanel data are constructed from repeated crosssections of Thailand's National Labor Force Surveys of workers born during 194667.Estimates show a downward bias of the returns toeducation in least squares regressions with individual data, a result confirmed with instrumental variable estimation. The overall rate of return is between 14% and 16%. Females have higher returns than males, and workers in urban areas have higher returns than those in rural areas.