This of course if stable after horse has bolted? All students should have been tested 5 weeks prior to entry and 2 weeks ....... it is most likely that those carrying C-19 have spread it. The system has failed students big time. All the precautions in the World won't take into account those that will be carrying viruses - it's a huge amount to spend anyway, I would advise any student to go via Open University.
If they go home many won't find jobs to fill the gap. The domino effect of students returning home may well take people out of the employment chain for 14 days unless the wage earner/s manage to live elsewhere. But if it saves on student suicide rates rising it's the best option but NOT return to College !