Nguyen THA, Lê TP, Nguyen VH. CONTENT-BASED FRAMEWORK OF BEHAVIOURAL CULTURE EDUCATION FOR UPPER SECONDARY STUDENTS: INSIGHTS FROM INTERNATIONAL TRENDS AND IMPLICATIONS IN VIETNAMESE ALL-THROUGH SCHOOLS. TCKH ĐHSP TPHCM TPHCM. 2026;23(8). doi:10.54607/hcmue.js.23.8.5740(2026)