They do that at my DS's school too. He'll have it next year.
DD did it last year, but they don't provide the babies. She just had to add a 5 pound bag of flour to a baby doll and carry it around with her.
I have a real problem with many of the aspects of this assignment. First of all, to require that these kids get a ride to school is wrong and probably not even legal, considering Pennsylvania requires the school districts to provide transportation. That would tick me off to no end. There is no way I can pick up my son from school at the end of the day, unless it's an emergency.
Second of all, to require a 13 year old to get up in the middle of the night for an assignment every night for a few weeks is also wrong.
I understand what the intention is, but a child should not be run down physically and a family should not be made to do something very inconvenient for an assignment.
One day would be one thing, but this goes on for quite a while.