Researchers at Kansas State University, Olathe, are developing an emoji ballot that could help assess students' reactions to school meals. "School nutrition professionals are always looking for new ideas to promote healthier choices to students ... to find ways to get more student feedback so they can develop kid-approved menus that are healthy and also appealing to students," said School Nutrition Association spokeswoman Diane Pratt-Heavner. Getting a better idea of what students like can help eliminate food waste and save money as well.