After a few years of grading essays on The Prince, you start to see the same errors return like clockwork. Some come from the book's reputation, some from skimmed reading, and some from the way Machiavelli's ideas are summarized online. Naming these patterns lets you respond to them quickly and consistently.

The most common mistake is treating the book as a how-to guide for villains. Students read it as advice to be cruel for the sake of it, when Machiavelli spends much of the text discussing how to keep a state stable and avoid being hated.

Another is quoting the phrase that the ends justify the means. That exact wording does not appear in the book, though it is often used as a shorthand for Chapter 18. Students should learn to separate the popular summary from the actual text.

None of these errors mean a student is not trying. Most reflect how much noise surrounds Machiavelli before anyone opens the book. Good feedback helps them replace that noise with careful reading.

The Errors You Will See Most

A short list of frequent problems can be turned into a handout or comment bank. Students who see the list before writing often avoid the traps entirely.

• Attributing the phrase about ends and means directly to Machiavelli
• Ignoring that the book is addressed to a specific ruler in a specific moment
• Treating virtù as the same thing as modern virtue
• Summarizing chapters in order instead of building an argument
• Judging Machiavelli by modern morals without engaging his reasoning

Turning Errors Into Teachable Moments

Rather than marking an error and moving on, connect it to the text. If a student misreads virtù, send them to Chapter 6 and ask how Machiavelli uses the word for leaders like Moses and Cyrus. The correction comes with a reason.

Sharing a few anonymous examples with the class also helps. Students see that the errors are common, and the discussion tends to be more open when no one is singled out.

Catching Patterns Across a Whole Class

When many students make the same mistake, that is a teaching signal, not just a grading problem. If half the class misuses virtù, the fix is a short reteach, not thirty separate comments.

AI grading tools can surface these patterns by summarizing where students lost points across a set of essays. Seeing the trend in one view helps you decide what to reteach and which comments to reuse.