not all classes issue certificates. Granted, P.O.S.T or NRA LEO classes or a place like Frontsight will. And yes, some of the local houses do too. But seriously, if it's not from a certifying agency like POST, NRA LEO or FBI, will it really matter?
[flamesuit]
when I was teaching a lot years ago, there were some that were looking for and taking classes for that shingle. Had more than a few ask me right out of the gate, "Do you issue a certificate?"
seriously, will it make you feel better about what you learned?