1, different grades of students come to eat at different times, you can avoid each other waiting in line.
2. Calculate the approximate time of queuing for each grade and know the staggered time: 10 to 15 minutes already done.
3, the lower grades come early, the upper grades come later, led by teachers responsible for organizing the queue order.
4, do some publicity work, so that students speed up the time to eat, improve efficiency.