I think if you provide cloth diapers the best way to do it would be to have a specific set that stays with the child while he/she is in your program. Do a strip (or whatever the Fluff Love & CD Science group recommends when you buy used diapers) before the set gets used on another child.
I think that ^ would only be suitable with pockets and AIOs. Unless you do a separate load for each child's diaper laundry which might be the way to go to make parents ok with it
