Then there are humanitarian concerns for student safety
A strange and frightening concept. Does not compute.
Say, you have students who come back?
Forgive the tongue in cheek, I've seen some very outdated ideas in practice, such dehydration is good for you because it teaches discipline.
Now Sensei Smith, repeat after me, "dehydration IS good for you".
We spar and we do it all, except for weapons sparring ala competitive Escrima. Sparring isn't everything though.
It takes a village to stone somebody to death.