|This survey research aimed to compare success factors including managerial, budgeting, personnel, and community participation-related factors in health-promoting schools in the Ubon Ratchathani educational service area. The study population was staff members of 1, 187 schools which have been standardized and certified as health-promoting schools. They were 487 gold-certified, 354 silver-certified, and 346 bronze-certified schools. From these schools, the participants
were drawn by a simple random sampling method. They consisted of 555 administrators, 555 board members, and 555 health teachers. The data were collected by written questionnaires. The statistical analyses employed in this study were descriptive statistics and the Kruskal -Wallis and Mann-Whitney tests. The participants’ responses were compared in terms of the above success factors. The findings showed that the three school groups significantly differed in their performance on the managerial and budgeting factors (p < 0.05). However, they did not differ in their performance on the personnel and community participation (p > 0.05). The findings suggested that school administrators should consider the managerial and budgeting factors in order to upgrade the silver- and bronze-certified schools.