10. Boulder Valley School District — Boulder, Colorado
In the past several years, this Colorado school district has revamped its offerings to include burgers and nachos made with hormone- and antibiotic-free beef, locally sourced bratwurst and tamales, buns from Whole Foods Market, and an international array of dishes. Scratch-made items include lasagna, Szechuan beef and broccoli stir-fry, cheesy polenta with veggies, and oven-fried chicken. Students are allowed to hit up the salad bar as much as they want (and get unlimited skim or organic 1 percent milk and fresh fruit).