Too bad they canceled it :(
I liked it, but I can see why it didn't last past the first season -- it's not awful, but it's not for the masses. The lead actress is perfectly cast in her role, as are many of the other characters. There's some definite comedic writing and acting taking place -- and, no laugh-track. Would make a great sitcom for Netflix, without the restrictions of network television.
It'll undoubtedly be available for streaming from a variety of sources, definitely worth a view if you're in need of a laugh :-)
Bad Teacher, awful show! My wife and I couldn't even finish the first episode.