Researchers in Tanzania set out to test whether school feeding programs actually improve what children eat. They surveyed 300 students aged 10–14 across 10 primary schools in Kisarawe District, measuring two key markers: whether children ate a variety of foods (dietary diversity) and how many meals they ate each day (meal frequency).
This matters because the study region has high rates of malnutrition—11% of school-aged children are underweight, and 34% are anemic—which can affect learning and long-term health. Understanding whether school meals work is essential for resource-stretched education systems.
School feeding more than doubled odds of varied diets, but the effect was weak
Children who participated in a school feeding program were 45% more likely to meet the minimum standard for dietary diversity (eating foods from at least three different groups). This sounds promising, but the effect was borderline—just barely missing the statistical significance threshold researchers use to confirm a finding is real rather than chance. The study also found only 49% of all students met the minimum dietary diversity score, suggesting many children still eat monotonous diets regardless of the program.
Huge coverage gaps undermine the whole effort
Here's the critical problem: only 65% of students were even covered by the school feeding program. That means over one-third had no access at all. Additionally, only 15.3% of students reported eating the minimum three meals per day—a figure that barely moved despite school meals. All ten schools faced major infrastructure and supply chain problems, and none fully followed national nutritional guidelines. The researchers concluded that without fixing these logistical breakdowns and expanding who gets fed, school meals cannot fulfill their promise.
Expand coverage and fix the basics first
- Ensure universal access: scale up programs to cover all students, not just 65%, since exclusion undermines impact.
- Strengthen supply chains: guarantee reliable food delivery to every school to prevent interruptions that hollow out the program.
- Align meals with standards: train schools to meet national dietary guidelines so meals actually deliver nutrition, not just calories.