I was worried about this when I started because typically those looking for car are infants but I have been very lucky. My 2 kids when I started were 3 yo and 1. I signed on another 3 yo right away and another one yr old to start shortly after and another one 2 mos later. They were all spaced by 2 mos which probably makes a huge difference. The three little ones are super close and the neatest thing is they all try to keep up with each other developmentally so the littlest keeps up with the older 2. I also have another 3 yo now and another 1 yr old starting in Jan which I wanted as my youngest will then be 2.

Basically I think balance of ages is the most important so the kids have playmates etc. I am sure I would see a ton of beh and boredom from my 3 yo if she was with babies all day. I also kept it at no more then 3 under 2 yrs old.