A factor of 5 change in the tail, over 30 years.https://twitter.com/amcafee/status/793589071369146368 …
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seems like a pretty good, standardized data point — most 7th graders can/will take a standard math test
I found it confusing with SAT possibly meaning the test administered by the Collegeboard
I'm sure it did. Hard to distinguish at the 0.01% level otherwise.
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