Don't look for low-carb on the school lunch line. The people who prepare those lunches are meeting in Indianapolis at the American School Food Service Association conference. But there's little interest in the Atkins or South Beach low-carb diets. Some doctors say the diets aren't appropriate for growing children and active teenagers. But the food service administrators are looking for alternatives to Tater Tots and fish sticks. Dietitian Dayle Hayes of Billings, Montana, says parents in some school districts are requesting bunless hamburgers on a la carte menus. Vendors at the convention are promoting healthy low-fat fare, such as fruit, turkey and yogurt.