Are you aware that the Kibbutzim have largely stopped doing that? Among other things it was found to be mentally damaging to the children. Even the ones that remained communal no longer have communal childrearing anymore.
"Collective education can be regarded as a failure. The family as the basic social unit has not been abolished in kibbutzim. On the contrary, familistic trends have become stronger than ever, and kibbutz parents have reclaimed their rights to care for their own children. Collective education has not produced a new type of human being, and any differences found between adults raised on and off the kibbutz have been minimal."
Some context: https://en.wikipedia.org/wiki/Kibbutz_communal_child_rearing...