Statistical Analysis: Multivariate multilevel regression models were used to examine intervention effects on outcomes, controlled for background characteristics (i.e., age, gender, location, type of school, grade, BMI z-score).Results: The intervention group showed significant improvements in total dietary knowledge (B=12.74, p< 0.001) and intake of healthy items (B=1.89, p< 0.001), compared to the control group. Intake of unhealthy items decreased significantly (B= -1.43, p< 0.001), compared to the control group. These results were adjusted for age, gender, type of school, location, BMI z-score, study group, and score at baseline. Conclusions and Implications: Sahtak bi Sahnak is an effective and culturally appropriate school-based intervention for targeting diet among a variety of Lebanese adolescents.