Yes, but are certs issued with grade-level limitations?

One of the factors here is one that faces all professions I know about. That is, that once you accept someone into the ranks, you're giving them the keys to the candy store and it's hard to get them back if it doesn't go well.

In the Red Cross, for instance, that was an important consideration-- when does a volunteer qualify to become a paid staff member who may transfer from unit to unit? A lot goes into that evaluation, because once you put someone on staff, you've sort of put the stamp of the whole Red Cross movement's approval on them, and then they may migrate into sensitive responsibilities based on that apparent endorsement.

And-- changing Human Resources law is making it tougher for employers to give honest but negative references when they're warranted.

Even without tenure in the picture, it can be tough to protect the public from someone who turns out not to have been worthy of the second chance they may have gotten somewhere along the line.

~Susan