Exposition is where the storyteller sets the stage for the drama to follow. Who is this story about? What is his/her challenge — in your case, test? What’s at stake in meeting the challenge — or, why does it matter?
Rising action: a chain of events, each raising questions about what will happen next.
Climax: a central turning point — in your case, the moment when you either pass or fail your test. There can be other, more minor turning points before this.
Falling action: What do you do once you’ve passed or failed?
Resolution: You show or tell (or both) how you’ve changed.