Al-khawaldeh, Fayez Suleiman. 2020. “The Reality of Competitive Advantage in Secondary Government Schools  in Al-Mafraq Governorate: A Field Study on the Principals of Public Schools in Mafraq Governorate – Jordan”. Journal of Educational and Psychological Sciences 4 (30): 35-19. https://doi.org/10.26389/AJSRP.F290220.