Chicago School Bans Homemade Lunches
news.yahoo.com
news.yahoo.com
I could think of more plausible reasons, but if the claim is taken at face value the direct implication is that schools have more authority to police kids health than parents. If this is the case, it would be perfectly logical to impose requirements for home diet as well.
However, it is pretty uncontroversial that banning things, especially highly sought after things, has unintended consequences.
A 6 year-old policy probably has it's bugs all worked out, why the sudden change of heart?
Alternate link: http://www.king5.com/news/School-bans-students-from-bringing...