Your child's school lunches and snacks are a major source of the essential vitamins and minerals they need, to grow and develop over the years. The foods you pack for your child will give them the energy and nutrients needed for learning and development. Without enough energy from food, they may feel tired and find it difficult to concentrate in class. Just like adults, if tasty healthy foods are not available when your child is hungry, the chances that he or she will reach for unhealthy junk foods is greater.