<p>I don't think the mean scores prove a thing. A different pool of students take different AP tests. I would expect that BC calculus would have a high mean score because weak math students aren't going to be taking that exam. However, weak science students take AP environmental science and take the exam. Very few students who genuinely excel in science take that test. I think that explains the discrepency in the mean scores. </p>
<p>On the SAT II, the College Board adjusts the various scores so that the same score is supposed to represent the same level of mastery no matter what the subject matter. Thus, a 790 on the math iic exam is supposed to represent about the same level of mastery as a 790 on the US History exam, even though the percentage of students who take math 2c and achieve a 790 is much larger than the percentage of students who take the US history and achieve a 790. The pool of students taking the US history exam is MUCH larger and the median score on the SAT II is much lower. I don't think the lower median score proves that the SAT II in US history is more difficult than math iic. It doesn't mean the test is easier either. The discrepency in the mean scores is, IMO, a function of the difference in the group of students who take the two exams. </p>
<p>As further anecdotal proof of what I'm saying, a generation ago, relatively few high schools offered AP US history. Now, it's one of the most common AP courses and that exam has more sophomores taking it than any other AP.Most of these kids have not taken any high school-level US history course before taking the allegedly college-level AP US history course. Now despite the fact that these kids supposedly take a higher level history course than their parents who took the typical high school history course required for graduation, guess what? The College Board had to recenter the SAT IIs just as they had to recenter the SAT I. That's right...with a much lower percentage of students taking AP US history a generation ago, the mean SAT IIs in US history were much higher than they are now. You can't tell that by looking at your kids' scores..but something like a 680 on the US history in the old days is about a 730 now. Sure sounds more impressive, doesn't it? </p>
<p>The common explanation for the fact that median SAT scores are lower than a generation ago is that more kids are applying to college now, so it's not fair to compare the scores between generations. However, SAT IIs are taken by a much smaller group of students and despite the fact that most of them took an allegedly more rigorous college course, they get scores substantially below those achieved by students who had only taken high school American history courses. This is true across the board by the way. If our high schools are so much more rigorous now, why do the kids who take SAT IIs do so much worse? (The only exception is math, and that is because they now can use calculators.) </p>
<p>I'm not suggesting that AP lite courses aren't worthwhile. Indeed, my earlier message explicitly stated that I recognize that they are. I'm just saying that it's silly to claim that when a lot of kids skip basic high school courses like physics or precalculus to take courses like AP environmental science or AP psych or art history or US government or other BEGINNING courses, it makes the high school better. Mathews silly index says it does. And by weighting all AP courses , as many high schools do, we are encouraging kids to take AP lite courses so they can achieve higher class ranks.
Oh, BTW, AP-lite isn't a term I invented. It's one that's widely used.</p>