<p>To the OP’s question, I have two observations. At my son’s relatively highly ranked public high school, all the kids who worked hard, did the homework, handed in the papers and did a relatively good job got an A in the Honors/AP classes as well as in other classes. They did not have to be incredibly smart to get all A’s, just diligent. The less smart ones who were painfully diligent – ShawSon used to describe a set of girls in his classes as OCDs as they did everything right and came in every day at 6:30 to meet with teachers to go over assignments before handing them in – still did very well. The tests were not typically sufficiently hard to distinguish between kids who were really bright and kids who were bright and hard-working. </p>
<p>Because of this compression at the top due to grade inflation, elite colleges can not use grades (or even class rank, although the school did not report class rank) to separate out the great kids academically from the good ones. So, given that all the kids had all A’s, the elite colleges would have to use difficulty of high school plus difficulty of schedule as a proxy for academic ability.</p>
<p>One might think that this would increase reliance on SAT scores. But, a few years ago, the College Board in its wisdom recentered SAT scores . Although the recentering was done for another purpose, it had the effect of compressing scores at the top. For example, all students who would have received math scores 730 or above on the previous version of the exam received 800s on the recentered version. I’ve posted in another thread about the effects of the Verbal recentering, which does create compression as well (though I think less, IIRC). So, SAT scores are less valuable in separating out the upper tail of the distribution. They all have A’s and really high scores.</p>
<p>What’s an elite university to do if they are trying to separate out the exceptional kids from the sea of really good ones? Look for a) difficulty of high school; b) difficulty of curriculum; and c) external signs of passion and quality (science prizes, publications, jobs/internships, etc.). That is consistent with the trend the OP is reporting.</p>
<p>My second observation is that students at highly selective private high schools in and around our city that grade harder probably disadvantage their kids in the college admissions process somewhat by their hard grading relative to public high schools. Of course, they don’t rank, but at least grades distinguish. But, in some courses, teachers haven’t given an A in over 5 years. So, GPA’s are lower. The private schools claim that their harder grading does not create a disadvantage and that college admissions offices know the grading philosophies of each of the professors (which seems a real stretch to me), but most of the kids in those schools who did reasonably well would have had all A’s at our public HS and would have looked to be in the top tier.</p>