Not on its own — but response-pattern analysis can flag pairs of students who share far more wrong answers than chance allows, and items that became suspiciously easy. Those are leads for review, never verdicts.
Updated 2026-10-12
For a classroom nursing exam, 0.70 or higher is the usual target; below 0.60 means individual scores are too noisy to trust for high-stakes decisions.
Updated 2026-10-12
A negative point-biserial means your strongest students missed the item more often than your weakest ones. It is almost always a mis-key, a second defensible answer, or a stem that reads two ways.
Updated 2026-10-12