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| Achievement Gains | 1 |
| Achievement Tests | 1 |
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| Educational Testing | 1 |
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| Educational Leadership | 1 |
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Peer reviewedLeMahieu, Paul G.; Wallace, Richard C., Jr. – Educational Leadership, 1985
Responding to doubts about the validity of test results that showed the Pittsburgh School District's school improvement project to be highly successful, the district validated its results by administering a different test to a representative sample of students in secure conditions. (MCG)
Descriptors: Achievement Gains, Achievement Tests, Basic Skills, Educational Testing
