Wednesday, July 19, 2017

CURMUDGUCATION: Did SAT Unmask Grade Inflation?

CURMUDGUCATION: Did SAT Unmask Grade Inflation?:

Did SAT Unmask Grade Inflation?

Image result for Grade Inflation animated gif

The story was carried by USA Today and rapidly picked up by much of the Kids These Days press-- the good people at the College Board have discovered rampant grade inflation as illuminated by the SAT, as witnessed by variations on this lede:

Recent findings show that the proportion of high school seniors graduating with an A average — that includes an A-minus or A-plus — has grown sharply over the past generation, even as average SAT scores have fallen.

Like many education stories, this puts some thins together that have nothing to do with each other. Let's pull apart the pieces, shall we?

SAT Score Dip

The span discussed is 1998 to 2016. During that span, the average SAT score (on the 1600 scale and without the worthless writing portion) dropped from 1,026 down to 1,002. So, just a few questions we need to answer to know how exciting this is.

First, is a 24 point dip significant? That's hard to track down. This source from the College Boardsuggest it would mean about 3 percentile points. But folks at Fairtest (who don't work for the College Board) peg the margin of error at 60-- so the "drop" would fall well within the margin of error.

Second, are the populations who took the test comparable? That's a no. Since 1998 the folks pushed to take the test have grown, especially in states like Illinois where every student must now take the test. So over the span we've added way more students who would not have taken the test in 1998, 
CURMUDGUCATION: Did SAT Unmask Grade Inflation?:

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