The Breakfast Club presents to us the five archetype of high school students. Every kid can find himself in those, if not in true form, by the mix of two of them. Even today, it holds true, if the lingo doesn't. I'm not talking about cliques, I'm talking about personality and acceptability.
This is John Hughes' master piece in term of analyzing the teenage mind. You're faced with what makes somebody cool, why you get rejected, the walls that are built between the groups, and how they are built, maintained. You get the different angst they face every day: from parental abuse to parental absence, from peer pressure to bullying, from delinquency to suicide.
Those very opposite characters are put together and confronted with each other's reality. As they argue, squabble, and fight, they never forget to form common cause against their oppressors.
There's nothing negative about this movie, it's just starting to date a bit, but not too much. Hughes did a great job to keep the 80s out of his film as much as possible. The only thing that can irk, is some bits of youth lingo which is now outdated. Fortunately, very little is used, and the rest is still current.
You have to see this, but keep in mind the release date and that it's all happening in the library. A single set.