This study examined the perception of educational quality among grade 8 and grade 9 students in Vietnamese public secondary schools. The researchers employed a quantitative approach to examine the students' perceptions of educational quality. Convenience sampling was utilized to select participants with 1644 grade 8 students and 2602 grade 9 students. Descriptive and inferential statistics were used to identify significant differences. The findings revealed significant differences in the perception of educational quality between grade 8 students (learning from the new 2018 national educational curriculum) and grade 9 students (learning from the old 2006 national educational curriculum). Additionally, variations were observed among students from three distinct provinces notwithstanding the application of a standardized secondary educational curriculum. The study recommended that educational policymakers at various levels should develop and standardize instruments and guidelines to embed a quality culture within educational setting practices. Such initiatives were essential for enhancing the awareness and competencies of individuals and collectives engaged in the educational process. This research served as an informative channel for schools to reference in enhancing quality and contributing to developing a quality culture within the school.