ANGKHURANAWIN , A.; SITTITUNE, T. A STUDY OF THE RELATIONSHIP OF THE SCHOOL ADMINISTRATION AND EFFECTIVENESS OF THE SCHOOL ADMINISTRATION UNDER THE OFFICE OF SAMUT PRAKAN PRIMARY EDUCATIONAL SERVICE AREA OFFICE 1. Journal of Educational Review Faculty of Education in MCU, v. 8, n. 2, p. 268-280, 21 Aug. 2021.