Well, I disagree with your take. I've flown internationally (by myself) since I was 16, and I never found myself wandering around on the wrong side of whatever country clueless about my true destination.
These are college students, surely they know how to use maps, and researched their exchange program. It's doubtful that they are so stupid that the country code for dialing the phone would render them helpless and lost. There are infinite ways they could have made contact with the school, like, asking people for help?
I would imagine it to be incredibly easy for an Egyptian to get lost in the United States since so few of them have any experience in foreign travel.
Remind me not to ask any of these guys the way to the pyramids.