This is a mixed-method research scrutiny of the conflict management condition in educational institutions' personnel administration. A questionnaire was used to collect 210 secondary school administrators. The data were statistically analyzed including descriptive statistics. A model was also developed by interviewing 10 key informants with a semi-structured interview, and finally proposing a model using a focus group discussion with 8 experts, and the data were analyzed by content analysis.

 Results revealed that a model of conflict management in personnel administration based on Buddhism in schools under the Office of Secondary Educational Service Area, Bangkok are:1) principles, 2) objectives, 3) operation system, and 4) administrative process which were (1) personnel administration of conflict management in 5 areas: manpower planning, nomination, and appointment, performance enhancement, discipline and discipline preservation, resignation from government service, (2) Conflict management in personnel administration based on Buddhist principles based on Four Noble Truths which is suitable for conflicts in personnel administration in educational institutions including (1) Dukkha, problem determination, (2) Samudaya, analysis of the root cause of the problem (3) Nirodha, setting goals, (4) Magga, determining the solution to the problem.