I recently rewatched this movie on DVD, seeing as the last time I had seen it was almost a year ago. It is an absolutely excellent drama with the right amount of humor here. I remeber this movie was a big deal because MAtt Damon and Ben Affleck wrote the script themselves when they were probably in their very young twenties, and wond the Academy for Best Original Screenplay. It was also important for Damon and Affleck, because it helped launch their careers as actors, and they actually refused to give the movie studio the script unless they were going to star in it (which would have been a risk back then, since neither of the two had been considered that good of actors). As for content, this movie was ALSO a big deal because they used the f-bomb about 150 times. However, don't let that deter you from this excellent movie. And if you have to, you can always watch it on TV where they say "freaking" instead (though the commercials do kind of cut into the experience).
There's a bit of language. There's also sex themes in there. Not for younger kids or preteens. I think older teens will enjoy this movie. It's a coming of age movie about finding one's self in the face of pain and challenges. Got drinking, too.
This movie was exceptional, and had a great positive message. There was a lot of language, but nothing a mature teen can handle. There is also a brief section of content sexual in nature, but again, not so extreme that teens need to skip the entire experience.