Understood but what exactly would prevent you from teaching the class? Not having the NRA certificate? The test? The NRA pistol book? MA residents will want the MSP certificate vs the NRA, the test is available elsewhere and I believe most of what's in the book is out there (on an NRA cd?) and able to be printed out. If people want the NRA certificate then that could be a problem. I'm hoping others will chime in with if they think basic pistol is able to be taught without the official NRA student package.
To teach Basic Pistol, you are required to give the students a copy of the book. If you don't give them a copy of the book, then you can't claim to be teaching NRA Basic Pistol.