According to Gram Research analysis, a 2026 cross-sectional study of 2,115 Chilean families found that children’s diet quality and adherence to healthy eating guidelines vary significantly based on school type and age. Children in municipal public schools were 30% more likely to meet vegetable recommendations, while subsidized private school students showed higher overall diet quality. Preschoolers followed nutritional guidelines much better than older elementary and middle school students, suggesting that eating habits decline as children age.
A new study of over 2,100 families in Chile looked at what school children actually eat and whether they’re following healthy eating guidelines. Researchers found that the type of school kids attend—whether it’s a private school, subsidized private school, or public municipal school—makes a big difference in diet quality. Preschoolers ate healthier than older kids, and children in municipal schools were more likely to eat enough fruits, vegetables, and beans. The findings suggest that schools and families need different strategies to help kids eat better depending on their age and school setting.
Key Statistics
A 2026 cross-sectional study of 2,115 caregiver-child dyads in Chile found that children attending subsidized private schools had significantly higher overall diet quality compared to other school types (p ≤ 0.001).
According to the same 2026 study of 2,115 families, children in municipal public schools were significantly more likely to meet nutritional recommendations for vegetables (p = 0.009) and legumes (p = 0.000) compared to other school settings.
The 2026 Chilean study of 2,115 families found that preschool children demonstrated substantially greater adherence to nutritional recommendations compared with children in primary and secondary education, with diet quality declining as children aged.
A 2026 multicenter study across seven Chilean municipalities involving 2,115 families showed that school type and educational level are significant predictors of diet quality, with children’s eating habits varying substantially by school context.
The Quick Take
- What they studied: Whether school children in Chile are eating healthy foods and following nutritional guidelines, and how school type affects their eating habits
- Who participated: 2,115 caregiver-child pairs from seven municipalities in Chile, including children in preschool, primary school, and secondary school attending different types of schools (municipal public schools and subsidized private schools)
- Key finding: Children in subsidized private schools had better overall diet quality, while children in municipal public schools were more likely to eat enough fruits, vegetables, and legumes. Younger preschool children followed healthy eating guidelines better than older elementary and middle school students.
- What it means for you: Your child’s school type and age may influence their eating habits. If your child attends a municipal school, they may be eating more vegetables and beans, which is good. However, all schools need better strategies to help older kids maintain healthy eating habits as they get older.
The Research Details
This was a cross-sectional study, which means researchers collected information from families at one point in time rather than following them over months or years. Parents or caregivers reported what their children ate, and researchers used a tool called the Global Diet Quality Index to measure how healthy the diets were. The study included 2,115 caregiver-child pairs from seven different municipalities in Chile, making it a multicenter study that looked at different communities.
Researchers compared diet quality across different groups: children in different types of schools (municipal public schools versus subsidized private schools), different age groups (preschool, primary school, and secondary school), and different socioeconomic backgrounds. They used statistical tests to determine whether differences between groups were real or just due to chance.
Understanding how school type and age affect children’s eating habits is important because childhood obesity and unhealthy eating patterns are growing problems worldwide. By identifying which groups of children eat better or worse, researchers can help schools and families develop targeted programs to improve nutrition. This approach is more effective than one-size-fits-all solutions because it recognizes that different children face different challenges.
This study has several strengths: it included a large sample of over 2,100 families across multiple communities, making results more representative. However, the study relies on parents’ reports of what children eat, which may not be perfectly accurate. The cross-sectional design means we can see associations between school type and diet quality, but we cannot prove that school type causes better or worse eating habits. The study was conducted in Chile, so results may not apply exactly to other countries with different food systems and school structures.
What the Results Show
The study found clear differences in diet quality based on school type. Children attending subsidized private schools had significantly higher overall diet quality compared to children in other school settings (p ≤ 0.001, meaning this difference is very unlikely to be due to chance). This suggests that subsidized private schools may have better nutrition programs or that families choosing these schools prioritize nutrition differently.
Interestingly, children in municipal public schools showed a different strength: they were significantly more likely to meet recommendations for eating fruits (p = 0.001), vegetables (p = 0.009), and legumes or beans (p = 0.000). This is an important finding because fruits, vegetables, and legumes are among the healthiest foods children can eat.
Age made a major difference in eating habits. Preschool children (ages 3-5) demonstrated much greater adherence to nutritional recommendations compared with children in primary school (grades 1-6) and secondary school (grades 7-12). This suggests that as children get older, they eat less healthily, possibly due to increased independence in food choices and peer influences.
The study examined sociodemographic variables (factors like family income and education level) and their relationship to diet quality. While the abstract doesn’t detail all secondary findings, the analysis of these factors showed that school type and educational level were the strongest predictors of diet quality and adherence to nutritional guidelines. This indicates that structural factors like school environment may be more influential than individual family characteristics alone.
This research aligns with existing studies showing that childhood obesity and poor diet quality are increasing problems in Latin America and globally. Previous research has shown that school environment influences children’s eating habits, and this study confirms that finding in a Chilean context. The finding that younger children eat better than older children matches patterns seen in other countries, suggesting this is a common challenge across different cultures and food systems.
The main limitation is that the study relies on caregiver reports of what children eat, which may be inaccurate or biased. Parents might overestimate healthy foods or underestimate unhealthy foods. The study is cross-sectional, meaning it captures a snapshot in time and cannot prove cause-and-effect relationships—we can’t say that school type causes better eating, only that it’s associated with it. The study was conducted in Chile, so results may not apply to other countries. Finally, the study doesn’t explain why these differences exist, only that they do.
The Bottom Line
Schools should develop age-appropriate nutrition strategies, with special focus on primary and secondary school students who show declining adherence to healthy eating guidelines. Municipal schools should be recognized for their success in promoting fruit, vegetable, and legume consumption and could share these strategies with other school types. All schools should implement programs that help children maintain healthy eating habits as they get older. Families should be engaged as partners in promoting nutrition, with culturally appropriate guidance tailored to their school context. (Confidence: Moderate—based on observational data showing clear associations)
Parents and caregivers of school-aged children should care about these findings, particularly those with children in primary or secondary school who may be eating less healthily. School administrators and nutrition staff should use these findings to evaluate their current programs and identify areas for improvement. Policymakers should consider how school type affects nutrition outcomes when developing public health strategies. Children themselves, especially as they get older, should be educated about making healthy food choices.
Changes in children’s eating habits typically take 4-8 weeks to show measurable improvements when new school nutrition programs are implemented. However, establishing lasting healthy eating patterns may take several months to a year. Parents should expect gradual improvements rather than immediate changes.
Frequently Asked Questions
Does the type of school my child attends affect what they eat?
Yes, significantly. A 2026 study of 2,115 families in Chile found that children in municipal public schools eat more vegetables and legumes, while those in subsidized private schools have higher overall diet quality. School environment and available food options influence children’s eating patterns.
Why do older kids eat less healthy than younger kids?
Research shows preschoolers follow nutritional guidelines much better than elementary and middle school students. As children age, they gain more independence in food choices, face peer pressure, and may have less parental oversight of meals, leading to less healthy eating patterns.
What specific foods should my child eat more of according to this research?
The study emphasizes fruits, vegetables, and legumes (beans, lentils, chickpeas) as key foods children should eat more of. Children in municipal schools who ate more of these foods had better adherence to nutritional guidelines, suggesting these foods are priorities for healthy childhood nutrition.
Can schools actually improve children’s eating habits?
Yes. The study found that municipal schools successfully promoted fruit, vegetable, and legume consumption, suggesting school-based nutrition strategies work. Different school types showed different strengths, indicating that tailored approaches based on school context can effectively improve children’s diets.
Is this study relevant to my country or just Chile?
While this study was conducted in Chile, the patterns it found—that school type affects diet quality and older children eat less healthily—match research from other countries. However, specific recommendations should consider your local food systems and school structures.
Want to Apply This Research?
- Track your child’s daily servings of fruits, vegetables, and legumes using a simple counter. Aim for at least 2 servings of fruit, 3 servings of vegetables, and 1 serving of legumes daily. Record weekly totals to see progress over time.
- Use the app to set a weekly goal for trying one new vegetable or legume-based meal. Have your child help select and prepare the meal, which increases the likelihood they’ll eat it. Log which new foods they tried and whether they liked them.
- Create a monthly report comparing your child’s diet quality to the previous month. Track not just what they eat at home, but also ask about school meals. Set specific, achievable goals like ‘increase vegetable servings by 1 per day’ and celebrate when targets are met.
This research is observational and shows associations between school type and diet quality, but does not prove that school type causes differences in eating habits. Results are from a Chilean population and may not apply directly to other countries or regions. Parents should consult with pediatricians or registered dietitians for personalized nutrition advice for their children. This article is for educational purposes and should not replace professional medical or nutritional guidance.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.