At what age would you feel comfortable letting your child go to a friend's house for a playdate without you if you were only acquaintances with the parents? For instance, to a school friend's house when you've met the parents a couple of times at school-related events but don't have an actual friendship with them. Until now, my child has only gone to the house of a friend alone if I've accompanied her the first time, or if we have a personal friendship with the parent. However, the last time we had this school friend over, her parents dropped her off (which we were fine with), but now I'm not sure what we'd be comfortable doing in the reverse situation.