I'm gonna go ahead and say the obvious: stay super on top of what the school/district is really going to do. It seems like everyday more districts are putting the kibosh on everything in-person. In light of what could be a human cost, the frustration of doing a whole lot of work for nothing pales in comparison...but save whatever brain cells you can by keeping an eye on the administration.
I asked the same question of some colleagues and someone suggested UV light as one way to sanitize certain items - at the least, headworn mics. I think it's a good idea but certain plastics - urethanes, foams, etc. break down in UV light.And how are multi-touch items like mics & transmitter packs going to be hygienically swapped? How will they be cleaned before and after each use, and how will that be tracked? Who will do it and what legal liability do they incur?
Yeah, and when Shure, Sennheiser, DPA, PointSource Audio and Countryman can tell me how much UV-C I can expose their products to, and how many times before durability or performance is compromised, I might try it. There are a couple of shops doing it now but without guidance from manufacturers and those shops are big enough that if a bunch of SM58s get damaged it's not the end of the world.
The main issue here, as I see it, is people not qualified to be giving advice are doing so. My personal issue with UV-C: how do you know it did its job? With quarternary ammoniums, phenyl phenols, isopropyl alcohol, hydrogen peroxide (even soap and water) - known products using testable concentrations and verified contact (wet) time will yield known results. Some products cannot be easily or safely cleaned with liquids or certain cleansers and for those, perhaps UV-C is a suitable decontaminate but before I use it I want the device or gear manufacturer to tell me I can safely do.
Note that I'm not being critical of you or your post, but of the suggestions you were given by well intentioned, but uninformed people.I think that's wise. I plan to do the same. BTW I am not qualified to be giving advice on sanitization of equipment, my primary reason in bringing up UV light was to explain that someone had suggested it to me but I had some concern with it. Hoping nobody takes my comment as a recommendation. . I look forward to the AES panel.