Read the passage.School vending machines are a bad idea for middle schools. In schools where vending machines are present, students are tempted to choose an unhealthy snack from the machine rather than buy a fruit or vegetable snack from the cafeteria. On average, school vending machine snacks have two hundred more calories than a piece of fruit. Schools with vending machines often use the profits from the machines to buy cafeteria supplies, like plastic ware and napkins.