Tangtong, K., Dee-aim, K. and Naebnean, T. 2023. A Study of Problems of The Implementation of Professional Learning Community Principle in Schools under The Office of Suphanburi Primary Educational Service Area 3. Education journal Faculty of Education, Nakhon Sawan Rajabhat University . 6, 2 (Aug. 2023), 170–181. DOI:https://doi.org/10.2774.EDU2023.2.260606.