A brilliant film, but not appropriate even for my age (17).
First off, this movie is not at all scary. What it is is a reimagined, rethought, and horrifically violent slasher film remake. Even though this movie is technically a remake, it's not at all like the original. The original was a boring, bland, average 70's slasher. This one is an brutally innovative retelling of not only the story of Michael Myers' killing spree, but also his childhood, humanizing him a bit (but still not portraying him in any sane way). Despite how well-done the movie was, it's not appropriate for minors. The language is awful, especially the first ten minutes, which contains at least 50 obscenities, most of them f-words. The movie also has the most vulgar sexual language you can imagine. The sexual content is very explicit, not only in references but also in actual scenes, which show teens having sex. Sex scenes are pushing even an R rating, with a lot of thrusting and nudity. (The unrated director's cut also has a rape scene, which was cut out of the R-rated version.) Another offensive item is the amount of teen drinking. However, the violence is more shocking than any of the above. In movies such as "Dawn of the Dead", the violence is extremely gory, but could never be interpreted as realistic. The violence in this movie is not as bloody, but is a thousand times more realistic and brutal. The beginning of the movie is all about a young boy going mental and killing four people. The first is a bully at school who he lures out into the woods and beats to death with a tree branch. The second one to go is the child's abusive stepdad, who has his throat slit wide open, gushing blood. The third is his sister's boyfriend, who has his head beaten into pulp with a baseball bat. Finally, his sister dies, being stabbed by her younger brother multiple times with a kitchen knife. All of this is shown in gory detail, and it's just the beginning of the movie! (And all of this covers the R-rated version; the director's cut is even worse.) Do I even need to say more? I would wholeheartedly recommend this movie to mature adults, but never to teens, even myself.
What other families should know
Too much violence
Too much sex
Too much swearing
Too much drinking/drugs/smoking