Of course I am studying for subject tests through other books such as Barron’s, but does anyone know if the questions presented through Khan Academy’s AP test prep courses are similar enough to those on the subject tests so that one may use AP practice questions from Khan Academy as supplemental practice for the subject tests?
Most likely depends on the subject. For math at least, the answer is no, since the only AP math courses are calculus and statistics, which are not really covered on the subject tests.
I am planning on taking Chemistry and Biology (E and M)