The Register weighed students' backpacks and talked to them about the health impact of heavy bags. We found packs that weighed up to 21 pounds. Health officials recommend that backpacks don't exceed 10-15% of one's body weight.

Burlington High School students have been carrying a lot of weight on their backs. Books, binders and school supplies can add up, and the school’s health office is seeing the impact. “Excess weight from a backpack can cause a lot of back complaints,”...