Chocolate milk is "good or bad" for you depending on your definitions. It has calcium, and more than a dozen nutrients such as protein, B-vitamins and a precursor to vitamin-D3, which is essential to health. It does contain extra sugar. However, if a child or grown-up will drink chocolate milk and not readily drink regular milk, the benefits outweigh the perceived "bad" of the extra sugars.The long answer: (according to: dairygoodness.ca/good-health/benefits-of-milk-products 1/22/2018). These are the nutrients. With over 15 different nutrients, milk--lactose-free or not--it's a good choice for health:Protein: Helps build and repair body tissues, including muscles and bones, and plays a role in the creation of antibodies which fight infection.Vitamin A: Aids bone and tooth development. Also aids in the maintenance of night vision and healthy skin.Vitamin B12: Aids in red blood cell formation.Vitamin B6: Factor in the conversion of food into energy and tissue formation, including bones.Riboflavin: Factor in the conversion of food into energy and tissue formation.Niacin: Aids in normal growth, and is a factor in the conversion of food into energy and tissue formation, including bones.Thiamine: Releases energy from carbohydrate and aids normal growth.Pantothenic acid: Factor in the conversion of food into energy and tissue formation, including bones.Folate: Aids in red blood cell formation.Vitamin D: Enhances calcium and phosphorus absorption, on which strong bones and teeth depend.Calcium: Aids in the formation and maintenance of strong bones and healthy teeth.Magnesium: Factor in bone and teeth health, conversion of food into energy and tissue formation.Phosphorus: Factor in the formation and maintenance of strong bones and healthy teeth.Potassium: Aids in the correct functioning of nerves and muscles.Zinc: Factor in tissue formation, including bones, and conversion of food into energy.Selenium: Factor in the correct functioning of the immune system, due to its antioxidant effect.