Well I emailed the teacher and asked her what the best way was and if she had a class list with contact info and she replied that the best way is for me to send the invites to school in Caitlin's folder and then she will take them and put them into each child's folder.
I can understand how this might cause problems. I dont want kids feeling bad, but I cant invite the entire class. We did that last year at daycare and everyone accepted!!! When in previous years we got alot of no's. But, the folder thing is pretty discrete. Each child gives their folder to the teacher and she opens it and takes out anything that might have been sent into school. I dont think the kids do anything with their folders besides put them back in their backpacks.
She did not offer to give me a class list. I do have a list of the first names of the children in Caitlin's class, but not last names and no contact info.