Well, scientists are not sitting still. In the Netherlands they are now trying a 100 years old vaccin which might be able to prevent corona infection, and some existing medications which can help appear hopeful. Most notable medicines used to fight malaria and AIDS appear to be good candidates to fight corona on the short term. Most notably the medicine against AIDS surprised me, but it seems to be hopeful.
When it comes to herd immunity, in which stronger people just get infected and were we overprotect the weak, the issue is that strong people being infected will likely suffer nothing more than a cold or a light flu, so they are now creating tests to see who has built up immunity, as people are are immune should be able to walk around freely without anybody stopping them, since they are not endangering anybody... as a matter of fact, should they get infected again, the virus would be powerless and not be able to get to somebody else... At least that's the theory. The only downside is, that because of the virus being new, nobody knows how long immunity lasts, but any form of quarantine at all will work counterproductive in finding it out, so once these tests can be used on a large scale , and scientist in the Netherlands were pretty hopeful on that one, things can go pretty fast....
Of course, I only know about some Dutch developments, as I bet other countries are working hard as well. When it comes to your diploma... I wouldn't worry too much, as basically this year may be wasted for many students, and school systems must take all this into account, although I do know that schooling is quite expensive in the US. Europe has compensation for schooling by default, which makes things a bit easier. I hate to be the bringer of bad news, but I must be honest...
But at least I did hear some news that is hopeful. I am now having some trouble with my nose, and lungs myself... nothing serious, and I am already recovering.... It's strange, as now I hope it was corona... if it was, I'll be immune soon...