After years of teaching elementary school, there’s one struggling student in particular that Robbie Butler cannot shake from her mind. “Ms. Butler, I’m hungry,” the boy would tell her every day. “I don’t have any food at home.” Butler is hardly alone in feeling concern for students who don’t have enough to eat and see their grades and prospects decline as a result. A recent survey released by No Kid Hungry found that 81 percent of public school teachers reported students coming to school hungry at least once a week.