That article is just an extended version. It is better in that the title is not making claims, and they at least have multiple caveats in the conclusions that the shortened version does not.
Well, one of the flaws in the title remains: they wrote “Academic performance”, while it’s actually “academic performance in the first year”.
However, the methodological flaws are still there.
Those are not actually data points, they are derivatives of groups of data points that have been normalized based in multiple factors. To claim that these are graphs of correlations between SAT and first year college GPA is misstating the actual facts.
Their data points are averages of highly skewed datasets which are, in turn, made up of different factors. The datasets are also not equally skewed. They use non-parametric statistics, yet present their graphs and results as though they were using parametric methods.
In short, there is lot of data manipulation and, added to the methods that they use, means that the statistical power of this model is very weak.
They claim that their graphs shows that
Yet they also wrote that these aren’t actually the HSGPA values or first year college GPA values of any particular students, or even the simple averages or medians of these values, but the result of normalizing, adding the effects of their definition of “academic struggle”, etc, etc, etc.
So this sentence does not actually describe what the graph is showing.
An additional problem is that even if this were an accurate representation of what is actually happening in these eight colleges, it does not prove that higher SAT scores demonstrate higher preparedness for college, or even for first year of college.
These results would still be there if SAT just indicators of student family income.
Higher income students are likely to do better in their first year of college than lower income students, because they have more support. Living away from home (these are all residential colleges) is also likely to be more difficult for low income students. Low income students are more likely to have spent a lot less time away from family. No summer camps, no long trips abroad, no times at home when one parent are both are travelling.
I am also pretty certain that students who attended boarding schools for high school will do better in their first year at residential colleges than students who attended schools with the same academic levels but lived at home. Not because they are better prepared for the classes, but are better prepared for studying while not living at home.
My point isn’t that there isn’t a correlation between SAT scores and academic preparedness. It’s that the correlation is a lot weaker than this article claims, and that their methodology is not good.
BTW, I don’t think that the authors’ agenda is keeping URMs out of elite colleges. Quite the opposite. Since their conclusions are that more needs to be done to make sure that low income students are more prepared I just think that they started with the assumption that SAT scores are a good indication of preparedness and moved backwards from there.
Again - the SATs/ACTs are useful, but their accuracy and usefulness is overstated here and elsewhere.
That being said, I think that the authors have an underlying message, with which I agree, which is that the problem is in the high schools that are serving low income kids are not preparing them well for college.
A - Average
B - Below Average
C - Confused, as in too confused to drop the class.