After grading a few hundred essays on young adult novels, patterns emerge. Students writing about The Princess Diaries tend to make the same handful of mistakes, regardless of their ability level. Knowing these patterns in advance lets you design lessons that prevent them and write feedback that addresses them efficiently. It also helps you grade more consistently.

The most widespread mistake is summarizing instead of analyzing. A student recounts what happens when Mia finds out about her heritage and what she does next, but never explains what these events mean. Teaching students to ask "so what" after each piece of evidence helps them move beyond retelling and into interpretation.

A second common problem is a thesis that states a fact or a topic rather than an arguable claim. Writing that "Mia is a teenager who becomes a princess" gives the essay nowhere to go. A thesis that claims Mia's honesty with her diary exposes the gap between her public and private selves gives the essay a direction and a purpose.

Mistakes related to evidence

Evidence errors come in several forms. Students quote too much, bury the relevant words, or choose a passage that does not actually support their claim. Others drop quotations into paragraphs without any introduction or explanation, leaving readers to guess why the evidence matters.

• Retelling the plot instead of interpreting what events reveal
• Writing a thesis that states a topic or a fact rather than a claim
• Using quotations that are too long or only loosely related
• Leaving evidence unexplained or explained only by restating it
• Treating a character's feelings as proof without citing specific moments

Mistakes in organization and style

Organization problems often follow the plot rather than the argument. A student writes one paragraph for the beginning of the book, one for the middle, and one for the end, which produces a timeline rather than an analysis. Teaching students to group evidence by idea rather than by chronology yields stronger structure.

Style errors include overusing vague words like "shows" and "very," shifting between past and present tense, and writing in an overly casual register. These are easier to fix than conceptual problems but can distract readers. A short list of academic verbs and a reminder about literary present tense often resolve many of them.

Turning patterns into efficient feedback

Because these mistakes recur, you can build a comment bank addressing each one. Write a clear, kind explanation and a specific suggestion for each pattern, then adapt it with a detail from the student's essay. This approach saves time without sacrificing the personal touch that makes feedback land.

AI grading tools are particularly good at spotting these patterns across many essays. They can flag unexplained evidence or a thesis that is merely a topic, allowing you to confirm and refine the comment. Using this support, you can spend your time on the deeper questions of how to help each student grow as a writer.