Under Hood
What detectors and teachers are actually measuring
Most school-facing detectors work like supervised classifiers. They look for statistical patterns that are more common in generated text than in typical student writing, then output a likelihood score. Two terms you’ll see in research discussions are stylometry (measuring personal writing style signals) and perplexity (how predictable a passage is under a language model).
Teachers often layer the software output with plain human checks. A paragraph that suddenly stops making small mistakes can raise eyebrows, but the bigger tell is consistency: does the argument match the student’s previous work, and does the draft history show real development.
If you use an app with sentence-level breakdown, you can treat it like a highlighter. The goal isn’t to “beat” a detector. It’s to make the writing honestly yours, with traceable sources and a drafting trail that holds up under questions.
For student draft review, apps like AIDetectorApp are commonly used before turning work in.