Here is my experience: I tried to put my very verbal 20 mo child into a daycare that grouped kids by age. He was peeved! He considered the other kids babies and balked everyday. The staff was frankly not responsive to his needs and considered him too much work.
So, I wound up putting him into a home based daycare with a range of ages so, 6 mos-5yo kids and that worked beautifully for my child.
Every child is different, and depending on the daycare's style you may find he does just fine, or there may be issues. I guess I'd try it and see...
