This is a great show! I totally recommend it! It has good messages, such as it's wrong to lie, steal, teen drink, and smoke. and it is SO funny. Also has GREAT role models. But unfortunately, there are some flaws. Most of them aren't common, but here's the gist on what's in the show:
Language 3/10 - Jesse says the "d" and "h" words sometimes, and most of the characters (except D.J, Stephanie, and Michelle) take God's name in vain quite often.
Sexual content/behavior 3/10 - A lot of the characters (especially Jesse) date a lot of people, and kiss a lot. There is an episode of innuendo, where Jesse is showing his newborn babies his room, and says, "Look, there's the bed! That's where you guys started!" In another episode, Kimmy Gibler, a friend of D.J's, is getting ready for school, and acts like she sees a boy, and flashes her breasts out of her jacket with her shirt still on. An episode where D.J and her friends play spin the bottle at her 13th birthday party.
Other than that, it's a great show! No violence. And most of the stuff (besides taking God's name in vain) isn't very common. But my dad doesn't let me watch the later seasons (1993-95). Definitely watch this show!