Oh, this show.
It's absolutely hilarious. Jerri Blank's over-the-top innapropriate humor is something to be laughed at rather than cringed at. (if you're of the right age, of course.) My father loved it and my sister loved it and so do I, although my mom doesn't. It all depends on what kind of humor you find funny.
She has a diary that she calls her "Dirty, dirty jew diary" and I remember at one point she pointed out that she was "moist as a snack cake down there." There is also a blantant gay relationship between her english teacher and her art teacher.
But, as I've said, if you like that kinda humor then you'll love it. I wouldn't suggest showing it to kids though until they're at least 15/16, or older if they are the kind that would take a negative influence to heart.