How to actually map out The Hobbit for school
Most people screw up when they try to make a plot diagram for The Hobbit because the book doesn't follow a clean single arc like most novels. It's got a quest structure that loops back on itself, and that trips up anyone who just slaps events into Exposition-Rising Action-Climax-Falling Action-Resolution without thinking about what those labels actually mean in this story. The standard diagram for Plot Diagram The Hobbit looks reasonable at first glance, but the problem is where you put Bilbo's return to Bag End and whether the encounter with Smaug counts as the true climax. It depends on how you're reading the book, and I've seen students lose marks for picking the wrong one without a solid argument behind it.
Plot Diagram The Hobbit: mapping it out
Start by writing out every major event in order. Don't try to fit anything into categories yet. Just list the beats: the invitation, the dwarves arriving, leaving the Shire, Trolls, Gollum and the riddle game, the Misty Mountains, goblins, Elves, Beorn, the barrel ride, Lake-town, the Battle of Five Armies, the return home. That's your raw material. Then you sort them. The exposition is roughly chapters one through six, where you get the world, the characters, and the call to adventure. The rising action is everything from the edge of the Misty Mountains through the encounter with Smaug. This is where a lot of people get confused and try to split the rising action into two chunks. You don't need to do that. The entire journey section functions as rising action, even though it spans a huge portion of the book. The climax is the Battle of Five Armies. Not Smaug. Smaug's death is a turning point, yes, but the emotional and narrative peak is the battle itself, where every subplot converges: the Arkenstone, the dwarves versus Lake-men and Elves, and the Wargs. That's the moment everything resolves or explodes.
Falling action covers the aftermath and negotiations, and the resolution is Bilbo heading home and finding his party still there. The last few chapters before he settles back into the Shire are the denouement.
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Where people go wrong and what to do instead
The biggest mistake I see is treating the Gollum chapter as the climax because it's the most tense single scene. It's not. It's a midpoint obstacle. The riddle game raises the stakes, but the story keeps going for another hundred pages after that moment, so it can't be the peak. If a student puts Gollum as the climax, the whole diagram collapses because the falling action has no room to breathe. Another issue is the Arkenstone. Students often drop it in rising action and forget about it, which leaves a plot hole in their diagram. The Arkenstone is Bilbo's moral choice, and it belongs in the climax section because it's what drives the conflict at the Battle of Five Armies. Without it in that section, the diagram doesn't explain why everyone starts fighting at the end. I hit this exact problem once when I was grading papers. A student had mapped the diagram perfectly except they'd treated Beorn as a rising action event and completely omitted the Arkenstone. Their falling action had no cause for the conflict, so the whole thing looked like a list of events with no logic connecting them. I told them to move the Arkenstone decision into the climax block and reframe the falling action as the consequence of that choice. The diagram suddenly made sense because it showed cause and effect instead of just chronology.
What the diagram misses entirely
A plot diagram is a linear tool, and The Hobbit is not a linear story in the way it builds theme. The coming-of-age arc runs parallel to the quest arc, and a five-point diagram flattens that. Bilbo grows from a timid homebody into someone who makes independently moral choices, and that development doesn't map cleanly onto exposition and resolution. It happens in small moments scattered throughout, like giving the dragon gem to Thorin, then later refusing to give it back when he should, then returning it anyway to prevent war. If you're doing this for a class, the diagram will get you a decent grade. If you actually want to understand how the book works, you need to layer a character arc on top of it. Use a second chart for Bilbo's internal growth and place key scenes alongside the plot events. That's the workaround that actually works instead of trying to force a round peg into a square one. There are free templates online if you need a visual format. Search for a blank five-act plot diagram and plug in the events above. But the template is the easy part. The hard part is deciding what goes where and why, which is what I've tried to cover here.