Every teacher knows the feeling. The first few essays get careful attention, and by the end of a long night, the comments are shorter and the scoring is a little less patient. Research on grading has long pointed to this kind of drift, and it matters most on emotionally charged units like Maus I, where reactions can tilt a score.

The first step is to admit that bias and fatigue are normal. They don't mean you are a bad grader. They mean you are human, and a good system should be built around that.

Start with a clear rubric, written before you grade. If you write the standards after you see a few essays, you will unconsciously fit them to what you have read. Fixed criteria give you something steady to lean on.

Then plan your sessions. Grading in shorter blocks with breaks is more accurate than one long marathon. If you can, stop when you notice your comments getting terse.

Common sources of drift

Knowing the patterns helps you catch them. Most graders fall into a few predictable traps, and Maus I essays can trigger several of them.

• Halo effect: a strong opening paragraph makes the rest of the essay look better than it is
• Reputation bias: knowing a student's past performance shapes your reading
• Sympathy bias: a moving personal story softens your standards on evidence and analysis
• Order effects: a strong essay looks weaker after a great one and stronger after a poor one
• Fatigue: comments and scores get less careful as the session goes on

Practical habits that help

Cover the name on each essay, or collect work in a way that hides it. Grade one rubric row at a time across several papers, which puts the focus on the criterion instead of the writer. Shuffle the stack every so often so that the same students aren't always graded at the same hour.

Re-score a few essays at the end of the stack and compare with the scores you gave early on. If they differ, you have found drift. Adjust as needed, and use the lesson for next time.

Watch for the emotional pull of the subject

It is natural to feel protective of students who write with sincerity about a painful history. But sincerity is not the same as skill, and inflating scores doesn't help students improve. Hold the same standard you would hold for any other book.

The reverse can also happen. A student who writes in a detached tone may seem to lack understanding when they simply have a different style. Return to the rubric and ask what the evidence on the page shows.

Add a second reader

A second reader is a strong check. That could be a colleague who scores a sample, or an AI tool like GraideMind that applies your rubric to every essay in the same way, without tiring. Where the two of you disagree, look again, since the gap usually points to a real question about the essay.

The aim is not to hand over your judgment. It is to give yourself a steady reference point across a long stack. When you finish, students can trust that the last essay was read with the same care as the first.