19 junio 2015
Each year over 2 million high school students take over 4 million Advanced Placement (AP) tests in an attempt to earn college credit. The number of AP students in the United States is growing each year, but a new study questions the usefulness of AP courses for students who don’t take AP tests.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/5yy06EkvMis/150619114746.htm
