Children with healthy diets, including high consumption of fruits and vegetables, performed better on academic tests than children who consumed fewer fruits and vegetables in a study published in the April 2008 issue of the "Journal of School Health." The study of 5,200 Canadian fifth graders found that the kids with healthy diets were up to 41 percent less likely to fail literacy tests than the other children. A number of factors influence the academic performance of kids, but nutrition is an important contributor to better school performance, the report noted.