Re: sleep overs and overnight school trips.
My parents didnt allow sleepovers,but over night school trips were okay. While in Primaray school and High School ,either Mom or Dad would go with me and my siblings.
Where i live teachers always need at least 2 parents to help in organizing the trip and the parents have to go too.
Not many parents are actually crazy about going on a school trip in class 2, 4,8 and 10,but my parents always did it,that way we didnt miss out and it was a good experience.In college we were allowed to go alone on night trips.