1500' circuit??? I don't think that's really... legal's not the word, but advisable, given the potential conflict with overflyers.
I don't think you ever needed a student license to take dual lessons, only to go solo. but for rural schools especially, you might not be able to get a couple of hours in a decathlon easily. I don't know what the legalities of an instructor bringing a plane out to a satellite field (with permission of the CFI, of course) to take a club through unusual attitude recovery training would be, but it'd be a great idea.