It actually works out that the more kids there are the less they need us. The children play with each other, make up their own games, etc. My role is to supervise, provide ideas to expand their play or interests etc. It isn't necessary for me to follow each child and personally be their by their side all day. That isn't a healthy environment either. While 7 under 2 is questionable, 7 under 3-4 is totally manageable and would be the same ratios if you went to a preschool.