ds's nursery has a uniform (red tracksuit with the nursery logo on the top, red shorts and sports shirt, also with the logo, for the summer, and an optional red hat). I too thought it a little odd at first, but really like it now. Like others have said, it makes life a little easier as you don't have to choose outfits, the children are easily identifiable as a group and when they are on outings. It also looks lovely when you see them all together! Children get fads from a very early age, especially for expensive marketing-driven things, such as Tweeny socks, or Barbie dresses and so on, so wearing a uniform cuts out a possible source of strife and distress 'But Molly's got one and I want one!'.