I would say OK to uniforms, but have a summer and winter one for the kids' comfort.
What I'm NOT in favor of: the semi-uniform dress codes that say you have to wear navy/white/khaki polos & pants. You just end up hating those colors. If you are going to hate something it might as well be something you will never wear again (i.e. a uniform). Plus, uniforms all come from the same place. You know who has on the Kmart pants and who has the Ralph Lauren ones. That defeats the purpose.
I blame this on parents who can't say no to their kids when they walk out of the house looking like hookers.