I would imagine these are very "loosable" items, and would have some "difficulty" being shipped, given their value and more importantly their POTENTIAL value, if/when gold normalizes against the world's fiat currencies.

I wonder if it can be used to teach other parents' children too

Thankfully in some States it's up to the discretion of the parent how their child is educated, so any 'teacher' that the parent deems qualified, is fit to teach their children. Some States require regulation and oversite - as sensible as that sounds, there is a huge net loss in quality education by doing that. By surrendering children to public (welfare) education, parents have little to no say in who teaches their children, other than knowing they are certified by the State to teach. Some parents are not comfortable with State sponsored education.

!BBH