In Entertainment Weekly, Emma Watson reported that she took the role because director/writer/novelist Stephen Chbosky told her that "Not only is this going to be one of the most important parts you play, you're also going to have the summer of your life and meet some of your best friends." She also reported that the claim came true.
In the book, the tunnel song was "Landslide" by Fleetwood Mac, but in the movie it was "Heroes" by David Bowie. Writer/Director Stephen Chbosky, reportedly changed the song to something grander after seeing the footage of Emma Watson standing in the back of the truck.
In an interview with LAYouth.com, author Stephen Chbosky said that he wrote the book for personal reasons, but realized that many people related to it while reading the book's customer reviews on Amazon.com.
According to an interview with Writer/Director/Novelist Stephen Chbosky, "watching people like Emma, Logan, Ezra, and Mae who never had prom, never really had a proper graduation, because they were always working, and watching those kids get to have a high school experience that we all take for granted was very special."
In the director's commentary on the DVD and Blu-Ray, director Stephen Chbosky mentions that Dead Poet's Society and The Breakfast Club were two of his favorite films growing up and that they influenced him.
When the family is eating dinner at the end of the movie Charlie asks his dad how he thinks the Penguins will do this year. The Dad replies that they will suck and need to learn defense. The Penguins went on to win their first Stanley Cup that year.
At the time of filming Ezra Miller was 17-years old, about the same age as his character. Logan Lerman was 18-years old, four years older than his character. In reality, Lerman is 9 months older than Miller who plays a character close to four years his senior. Emma Watson was 21-years old at the time of filming making her the oldest of the three main actors.
Was originally rated R by the MPAA for "teen drug and alcohol use, and some sexual references" but was later changed to PG-13 after an appeal for "mature thematic material, drug and alcohol use, sexual content including references, and a fight - all involving teens"
In an interview with Movieline, Ezra Miller said that he first saw The Rocky Horror Picture Show (1975) when his older sister showed it to him as a young kid. At the end of the movie, his sister turned the TV off and said, 'you can't tell mom and dad'.
The picture inside Charlie's school locker (when he wears his Christmas suit to school) is the singer Johnny Ray. At the school dance when Sam & Patrick perform "the living room routine" to Dexy's Midnight Runner's Come on, Eilene, the first line of the song is: "Poor ol' Johnny Ray..."
Writer/Director/Novelist Stephen Chbosky, is a native of Pittsburgh where the movie is filmed and set. In an interview with Hollywood.com, he reported that his parents have breakfast 3 times a week at one of the filming locations, King's Restaurant.