The Food Guide Pyramid for young children (view pyramid) was designed by the US Dept. of Agriculture to promote healthy nutrition in children from the age of 2 - 6 years. It is meant to be a general guide to daily food choices.
From: keepkidshealthy.com

If possible, arrange to observe the teaching in your child’s classroom. Afterward, talk with the teacher about what you saw and how it fits with your hopes for your child and your child’s needs.
Tell the teacher if you think your child needs special help and about any special family situation or event that might affect your child’s ability to learn.