The exposition of the outsiders talks about the struggle between the two classes, rich and poor. The greasers have problems because they're poor and people think they're criminals, but the Soc's have problems too.
The rising action occurs when Johnny kills Bob the Soc. This sets up the plot where Johnny and Ponyboy must run to avoid the fuzz (police).
The climax occurs from the time Johnny and Ponyboy run into the burning church and to the time Johnny dies. Johnny and Ponyboy attempt to save some kids in a church fire and succeed but Johnny later dies of his injuries,
Dally enraged by Johnny's death goes and robs a grocery store and purposefully ends his life by pulling a gun on the police. Johnny was his best buddy and he couldn't live with him dead.
The judge states that Ponyboy is innocent and Ponyboy starts to realize that fighting isn't the answer. He then writes a report for school which is actually this novel.
My favorite scene in this book is when the two classes have the rumble. It is an exciting part in the book and is fun to visualize the fight happening.