…Using a single test to determine admission to the most elite schools is not a sound way to select students. It’s an outdated process that leads schools to miss too many talented students, a single-measure notion that the best colleges don’t even use. The Specialized High School Admissions Test isn’t based on the middle-school curriculum and has never been statistically shown to be a predictor of performance. Many miss the admissions cutoff by tenths of a point.
Any statistician will tell you these test results are unreliable.