"To question education is really dangerous. It's the absolute taboo..."

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<p>Well, you asserted in post #61 that such behavior by Microsoft was ‘well-known’. Well, it certainly isn’t well-known by plenty of people, including myself and others I have talked to. If it is indeed well-known and we are just misinformed, then one would think that written evidence of it would be easy to locate. </p>

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<p>I’m not even entirely that that’s true. I suspect that certain high school grades serve as a proxy for work ethic and natural intellectual curiosity far more so than do other topics. To get an A in high school Social Studies can often be achieved with relatively little work. That seems far harder to accomplish in high school physics or math.</p>

<p>But anyway, if what you are saying is true that the predictive ability of a particular high school class is contingent upon the major that the student chooses, then it would be trivially easy for a statistical model to pick that up. Just interact the high school grades with major (or, if he drops out before choosing a major, then the college courses that he takes). That demonstrates the power of the model. It can incorporate whatever nuances you can think of, as long as the data exist - which it surely does. </p>

<p>But, like I said, you have to actually want to use the data.</p>