Optimization of Educational Quality Assurance Through Digital Observation: A PPEPP-Based Analysis of Nurul Jadid Senior High School. IEC: Journal of Educational Innovation, [S. l.], v. 2, n. 5, p. 63–74, 2026. Disponível em: https://research.iecjournal.com/index.php/IEC-JEI/article/view/147.. Acesso em: 13 nov. 2026.