A few comments already pointed at Timezone differences (which, OK, maybe it doesn't matter if courses are recorded and can be taken asynchronously) and Internet

A few comments already pointed at Timezone differences (which, OK, maybe it doesn't matter if courses are recorded and can be taken asynchronously) and Internet access (it seems to make sense, but I don't know if it isn't a little cliche to assume these students automatically come from very poor countries without internet). Another I can think of is possibility of re-entry. Last time I heard the USCIS was virtually frozen for visas and all. If these students leave for this year we don't know if they'll be able to come back once the pandemic is over.