Jay Matthews:

I am collecting the Challenge Index data now. The early returns indicate our local schools will set a record for the number of AP and IB tests being given. In fact, there appears to be no other region in the country that has as high a level of participation in college-level courses and tests.
That, I think, is a good thing. The Washington area is going to look good on most educational measures because it has some of the highest levels of parental income and education. All the research shows that students who come from affluent families with parents who went to college do better in school than students without those factors. But most of our school districts have done something most other U.S. districts have not done. Our districts have opened these challenging courses to all students, not just to those with affluent, well-educated parents. And they have prepared many students from disadvantaged homes so well that they are passing these college-level tests and not only earning college credit but also getting a useful sense of how to handle the heavy reading lists and long final exams that make college, for many students, such a difficult adjustment.
Two large studies in California and Texas have shown that good grades on the three-hour AP tests correlate with higher graduation rates in college. I have interviewed hundreds of AP and IB teachers and students over the past 20 years. They almost all say that the courses and tests are the best academic experiences their high schools have to offer, and they recommend that more high schools use them.