When my kids were in college it was the big state university. Now their kids, grandkids go halfway around the world/can I tell their parents the risk?

U can tell them. But will they listen? Times have changed. The world is smaller than it used to be. The most practical reason that may get their attention is if a good education can be obtained near home for less $$$ thereby allowing more $$$ for travel later. Good luck bringing that message home!