The Perks of Being a Wallflower briefly made the news in the US over its rating.
Originally, the Classification and Rating Administration assigned the movie an R rating for teen drug and alcohol use, and some sexual references.
However this was downgraded to PG-13 by the Classification and Rating Appeals Board of the MPAA.
The movie stars Emma Watson, of Harry Potter and is about 15-year-old high school freshman who is taken under the wings of two seniors while he copes with his first love, the suicide of his best friend and his own mental illness.
The movie has now been passed 12A uncut by the BBFC for moderate sex references, drug use and one use of strong language.
The film ix expected to open in UK cinemas on 3rd October 2012.