They may be bad at differentiating causation and correlation, however, if they're just using the results as a way to try and predict which candidates will do be

They may be bad at differentiating causation and correlation, however, if they're just using the results as a way to try and predict which candidates will do better in the classes, this seems like a pretty good application. They're not going around teaching people algebra, based on this hypothesis -- they're recruiting potentially good programmers. However, it is correct that educators would need to do a little more research if they want to try and apply these results to a classroom.