Kindergarten Registration

I just got home from registering Nicholas for public kindergarten next year. I actually felt sick to my stomach while I was filling out the school forms. Just this morning I totally "get" why parents send their kids to private school. I'm so sad that he will be leaving the security of his preschool environment. He is in a safe little cocoon right now . I feel as if I'm going to be sending him off into the jungle to fend for himself from now on. OK, I'm being dramatic but I'm so nervous for him...and for me.