When the seasons change I send up a very specific letter to parents outlining EXACTLY what kind of clothing is required. I find too often that there are issues with what the kids are wearing. I still have kids sent in questionable clothing!

I think the problem is parents (especially those with a little one) don't play outside. They don't realize how 30 minutes out in -15 weather can affect their child. If a child is dressed properly it won't be an issue but those that don't come prepared are often cold quickly.

Send out a mass email to parents dictating what you expect. If you don't see any changes in the next week then you will need to address it directly with this parent. Just tell them that their child's arms and legs are getting cold being outside.

Good luck. Sometimes I wonder what parents think when they dress their kids, but remember most are going from house to car to daycare and never actually spend much time outdoors.