We have some similar exchange programs, but there are some families that prefer not to host a child. There are also summer camps that children can go to. Another example is the Quebec program, that gives a good opportunity to a child that has all the necessary assets to be successful.
If there were programs for French as a second language, whereby students could receive a scholarship to pay for all the materials and that would provide all the necessary opportunity to support their motivation, regardless of the economic status of the family, we would see their success.