The current project seeks to evaluate the effectiveness of numerous educational strategy interventions to increase the percentage of water consumed among early elementary school students over a 1-year period.

A community intervention trial will be conducted at four public elementary schools of the Coyoacan Delegation in Mexico City. It will include healthy first graders during the 2017-2018 school year whose parents agree to participate through verbal informed consent and a signed privacy notice. These parents will complete a baseline 3-day beverage record (two weekdays and one weekend day). The four schools will be assigned to one of three groups: Group I will receive the educational strategy during the first grade; Group II will receive it during first and second grades; and Group III will receive it during the first, second, and third grades. All schools will have water dispensers inside the classrooms, and the children will receive a reusable 600-mL bottle so they are able to consume water on demand throughout the day. A second record of beverage consumption will be obtained by completing multiple interventions within each group, and a third record will be completed 1 year later.

Inclusion Criteria:

• Healthy children
• Both girls and boys
• Children whose parents agree to participation in the study through verbal informed consent
• Children whose parents sign a privacy notice

Exclusion Criteria:

• Children who present with any pathology that interferes with the free consumption of water or with the proper execution of the study
• Children for whom it is not possible to obtain a baseline record of beverage consumption