And when Jesus was twelve years old, they went up according to custom. And when the feast was ended, as they were returning, the boy Jesus stayed behind in Jerusalem. His parents did not know it, but supposing Him to be in the group they went a day's journey, but then they began to search for Him among their relatives and acquaintances, and when they did not find Him, they returned to Jerusalem, searching for Him. (Luke 2:42-45)
Seems like it took Mary and Joseph 24 hours to figure out their 12 year old was not with them. They were content for Jesus to be in among their 'relatives and acquaintances'. And even as meal times rolled around, they didn't worry that Jesus wasn't to be seen. They assumed that their extended family was doing its job.
Interesting assumptions about child rearing and family huh?