Standardized Testing Debate — Standardized Testing: What the Evidence Actually Says

The standardized testing debate turns on two points: whether admissions tests predict school success, and whether they treat students fairly. The best large-scale evidence answers yes to prediction and splits on fairness. In Psychological Bulletin, Sackett and colleagues ran the key check. Controlling for family income moved the test-grade tie only from a .47 to a .44 correlation. A correlation of .44 still leaves most of each student's outcome unexplained. That gap between solid prediction and partial explanation is where the honest middle sits. Tests do work as statistical signals. They do not seal a student's fate, and they carry real gaps across income and race groups. Admissions rules reach beyond tests as well, as the recent fight over the fixed-period F-1 visa rule showed for international students. This explainer walks through the main published findings, their sample sizes, and their limits. Related coverage sits in the site's education-news hub.

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