. >> reporter: tim huelskamp is also concerned.gh 5th grade is 650, 9 through 12 850 calories. >> reporter: the new rules are the first major overhaul of school years in 15 years pushed by first lady michelle obama. >> we're going to dramatically improve the quality of the food we offer in schools. >> reporter: schools also have to serve more fruits and vegetables, less processed food and less fat. >> i don't think this can be a one size fits all. >> reporter: the dieticians say the calorie caps may leave some students on empty, especially athletes. >> they may be going to their after school sports activities hungry. that's a big problem. >> reporter: protests aren't just coming from kansas. in wisconsin students boycotted their school lunches and pennsylvania students used twitter to encourage kids to brown bag it. the government argues there's no limit on second helping of fruits and vegetables, but the kansas kids they're fed up with the smaller cervix. ♪ i'll carry you home tonight >> reporter: for "cbs this morning," chershary