In comparison to the commercial SAT-prep books, the material that comes from the College Board is of much higher quality. That's not surprising, of course, since it's the College Board's test, and they get to reuse all those questions that they have spent so much time (and money) writing, editing, and validating.

This Washington Post article is a little different from your run-of-the-mill story on how the new Writing section of the SAT has affected education in that it focuses on the multiple-choice part, and the way that those questions have been encouraging a return to explicit grammatical instruction.