My son is 6 and in the first grade. He has a friend in his class he really likes, and this boy has asked him to come to his house on Saturday. I talked to his mother on the phone, and she invited him. His teacher mentioned at our conference this boy was a nice kid. Am I being paranoid about taking him to a house where I don't know the family and dropping him off for a couple hours? How have other parents handled this? Thanks.