The goal of this clinical trial is to learn if a multicomponent nutrition program developed together with the students, parents, teachers and canteen operators will improve nutrition status of adolescents. It will also learn about the acceptability and feasibility of implementing the program in the school settings. The main questions it aims to answer are:

What is the effect of co-created multicomponent intervention promoting healthy food behavior and environment in schools on the proportion of normal weight adolescents? What proportion of the target adolescents and teachers does the intervention reach? What proportion of the schools are willing to implement the intervention? What was the level of fidelity of implementation of all components of the intervention and the barriers and facilitators to implementation? What is the cost for maintenance, and facilitators and barriers of sustainment? School going adolescents studying in grades 7 to 9 from 26 schools in India and 26 schools in Nepal will be enrolled in the trial and their height, weight, dietary behavior, mental well-being and physical activity will be measured at baseline and at 12 months follow up. After the baseline assessment the school community (students, school environment, parents, teachers, canteen operators) will receive the intervention.

Inclusion Criteria:

• Adolescents studying in grade 7 to 9 (aged 11-15 years) Exclusion criteria:

Exclusion Criteria:

• Adolescents with siblings enrolled in schools assigned to a different trial arm to avoid clustering, with underlying medical conditions and those who plan to change school within one year of enrollment (during follow up period) will be excluded.