Abstract
The predictive validity of the Metropolitan Readiness Tests, 1976 Edition (MRT) was examined. A sample of 176 first grade children was tested on the MRT during the initial month of school and was retested eight months later on the Stanford Achievement Test (SAT). Results demonstrated substantial validity of the MRT for predicting first grade achievement as measured by the SAT. The MRT was a more valid predictor of reading achievement for males than for females; no sex difference in validity of prediction of mathematical achievement was obtained. The MRT was about equally valid as a predictor of reading and mathematics achievement.

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