I read a story about the Kibbutzes in Israel in National Geographic a while back. It seems that they have a children's, adult men's, adult women's and marrieds' bunkhouses. In the children's they sleep in a common bunk area, share the same shower room and shower together. When the child get to a certain level of development, they place him or her to the adults' quarters. They seem to not have problems and the Israeli Air Force seem to better accept recruits from a Kibbutz than from the general population as pilots. These kids tend to marry outside of the Kibbutz where they were raised in.
Joelene