So here's my very pragmatic advice (worth exactly what you paid for it):  if you find yourself in a situation where you must provide an SDS to the high school for one of your dilute solutions but don't have one you can give them without creating one yourself, give them the solid material for which you have an SDS and have them make up the solution themselves at their location.  They then have the SDS which was required when they procured the chemical, and they are creating the dilute solution in their own laboratory, an action which does not require them to create an SDS for that dilute solution. You are compliant and they are compliant and no SDS for the dilute solution is ever required.

Ohmygosh, that's clever.  I must pat myself on the back for that last paragraph.  Yeah, I know-.does outreach qualify as a lab etc etc.  Many layers to that onion.

Rob Toreki