Banned in our schools, too, though the language doesn't specifically reference "crocs" - it's something along the lines of shoes "must tie or close with Velcro, and stay on the feet until the tie or Velcro is loosened". So crocs, flip-flops, slides, etc are a no-go. They enforce it, too - a friend of mine had to bring her DD a new pair of shoes on the second day of school, and whined about it. I was like "so....did you think there was an 'except for my daughter' clause?"