I think this more reflects the rise of an industry to help high schoolers get into college. Taking AP tests is pushed as a means of increasing your acceptance c

I think this more reflects the rise of an industry to help high schoolers get into college. Taking AP tests is pushed as a means of increasing your acceptance chances. It's also pushed by local school districts to show they're raising their game as far as getting kids into college. The increase has come in certain tests because those tests a) require less new infrastructure expense b) are easier to teach, and c) are of greater general interest.