Intervention
At the beginning of the intervention, community engagement and support seeking were conducted through official writing from the General Office of Education to the school principals and also in-person meetings with principals and nutritionists of each local community. Furthermore, attendance meetings were held with the school Parents-Teachers Association members and students’ Health Ambassadors. Building relationships and integrated efforts among different sectors and levels was the core approach of the intervention. In this regard, six to eight representatives were chosen purposively based on community engagement and interest in health issues to establish a Food and Nutrition Committee (FNC) (Additional file The action plan was developed as a living document around the six dimensions of the CRM based on five core strategies, including education, encouragement, creating supportive environments, informing, and sensitizing (Additional file Fidelity assessments were conducted by scanning the environment and filling out a checklist by a member of the advisory committee and FNCs. In this regard, the FNCs monitored and recorded all qualitative and quantitative aspects of activities using a data-collection form that involved the information comprising date, scale, duration, frequency, adherence, community partnership, executive director, and resources of actions (Additional file 