Do we need lunch periods, or even cafeterias?

Jay Matthews:

A flood of emails Monday resisting my suggestion of longer school days to raise achievement leads me to wonder if parts of the regular school day could be put to better use. Is the typical raucous high school lunch period, in an overcrowded and sometimes dangerous cafeteria, really necessary? My colleague Jenna Johnson wrote last week of imaginative principals letting students avoid the cafeteria in favor of staying in classrooms to catch up with work or having club meetings. Can lunch become a time for stress-free learning, rather than Lord of the Flies with tile floors?
Okay, I confess I have long considered lunch a waste of time. I avoided the cafeteria during high school. My favorite lunch was eating a sandwich in a classroom while convening the student court, of which I was chief justice, so we could sanction some miscreant for stealing corn nuts from the vending machine. (I heard a radio ad for that classmate’s business when I was home recently—he has become a successful attorney.) At the office these days I stay in my cubicle and have crackers and fruit juice, maybe a cookie if somebody has brought them from home.