<p>I like UCB’s idea, but it would produce a lot of data that I’m not sure admissions officers would know what to do with. Here is simpler idea. For a high school it should be possible to estimate a regression</p>
<p>GPA = a + b*composite<em>SAT</em>score</p>
<p>or to show what the average SAT scores are for students with GPAs are in certain bands,
say 2.5-3.0, 3.0-3.5, 3.5-4.0 .</p>
<p>You could look at SAT scores conditional on GPAs to compare grading standards across schools.</p>