Life Is a Long Quiet River

A revengeful nurse switches a girl and a boy at birth. They are raised in two radically different families. When the switch is revealed many years later, the now teenagers and families need to cope with their new environments.
Two babies are switched at birth. When the mistake is discovered 12 years later, it leads to complications in the lives of both families. One family is affluent, with dutiful and (apparently) contented children. The other family is poor, with rambunctious (even delinquent) children, often hungry, but with lots of laughter in the house.