i'm not a school nurse, but some things the school district does here seem to work fairly well.
the school district has boxes inside the grocery stores and hugemart with signs to drop off your kids' outgrown clothing to be
used as "spares" within the area schools. area churches have also volunteered to host boxes too. anything unusuable donations
are either tossed or torn into craft or quilting squares and donated.
from about july on, until school starts again, the newspaper runs articles asking people/parents to bring in old clothing that's been
outgrown or to buy school supplies for poorer kids,along with a pair of pants, a top, a package of undies, socks, etc. to be kept in the nurse's office. both are very successful. every time we grocery shop or hit hugemart all year, we toss in notebooks, pens, etc.,
pants, undies, and take them in a few times a year.
our early education building has two washers and two dryers. they have k-4, k-5, 1st grades, and headstart. lots of goofs!
something that gets rid of "potty" smells is the pet resolve carpet and spot cleaner. there's regular and pet resolve. you'd want
the pump bottle instead of the spray. it also comes in refill form. if needed, follow up with a blast of fabreeze spray.