I guess this thread is less about licenses and more about job satisfaction. Your job satisfaction is obviously in the toilet. On top of that you have a boss who will eventually find a way to get rid of you because he's made it obvious he doesn't appreciate you and you have made that obvious to him. Guess who is going to win?
This may be the time for you to do some soul searching and think long and hard about what you are passionate about. Then invest time and training into whatever that is. If you aspire to be a licensed plumber or electracian, then that is the path you should take. Sometimes there is financial assistance for reeducation. As well, I have heard that state universities are tuition free in Arizona for residents.
In my state, you do not have to have a license, or work under someone that has a license if you do maintenance work for the company you work for.
The only time you have to work under a license, if the company you work for contracts work on on someone else's property.
I'm not sure if this extends to schools, but I think it does.
Different states, differant rules.
I'm like Jim, this is not about a license, it is about job satisfaction.
If you work for an idiot, a license will not change the fact that you work for an idiot!
Yes I am a Pirate, 200 years too late. "Jimmy Buffett"