For one, it's unreasonable to assume that all of these students have home environments conducive to do high-def teleconferencing on American time zones.
Would that not also apply to domestic students, even the international students as America has very very spotty broadband access even in cities one section may have great service and go 2 streets over and you get crap...
I know locally that has been one of the biggest stumbling blocks for the local schools, dealing with students that did not have good internet.
