2.5.1. Educational interventions
The education program targeted two groups: (1) parents and school staff and (2) students (main target).Nutrition experts conducted parent and school staff training in three curriculum-based training sessions. For each session, a school health expert was appointed as the supervisor to oversee the sessions and provide a written report to the project manager at the end of the session. Three educational worksheets were prepared for each training session. Through these assignments that were supposed to be followed over 1 month, parents were obliged to follow the instructions as requested, and then the results were reviewed at the end of each month, and feedback was given to the parents.Student training was planned in 16 sessions according to the educational curriculum for a period of 16 weeks in the fall and winter of the academic year 2018–2019. The sessions were held by teachers and supervised by a nutrition expert in the school classrooms. Teaching/learning strategies included the followings: (1) lecture, (2) group discussions, (3) questions and answers, (4) brainstorming, (5) demo games, (6) practical work, and (7) field trip and scientific tour. One week prior to each training session, coordination was made with the teacher and school staff, and all team members were informed of any possible changes.