Yes I agree that school cafeteria should be required to provide range of food.This will benifit protein allergic people for example some people are allergic to chicken nd mutton and they need to stick to vagitables for their food intake.similarly , some people has religious food restrictions as well for example it is prohibited in Hindu religion to eat beef. There is cultural preferance of food as well . Taste is a subjective perception some people like a taste nd other dislike that taste.More over one gets bored with same menu and option and needs a change.Although low fat foods and vegetables should preffer because because they cover healthy component of our daily food chart.