Hey everyone, I'd like to share my recent story about my GMAT experience. I studied using the princeton review 2011 edition cracking the GMAT and their 2012 book 1037 practice question for the GMAT. The first book contained a bunch of errors along the way but it wasn't enough to make me write a bad review about it. The second book however......avoid like the plague....I'd estimate that of the 1037 q's at least 50 of the questions have fatal errors - i.e. diagrams not properly labeled with variables, shading or numbers, the answer explanation has nothing to do with the question and so on. The geometry section being the worst of the offenders. It looks like they literally just copied and pasted from other books or sources and didn't bother to edit.
Second piece of beef with Princeton...the 2011 edition came with 4 online practice exams. According to it I would have gotten: 600, 550, 620 and 580 respectively. After studying from three different books and getting most of the questions right in the book on the first attempt I was quite shocked. When looking through some of the answers for questions I got 'wrong' I realized that they were making the same basic editing errors that the books had: the answer key didn't reference properly or the graph/table didn't show up properly.
After this, I decided to try GMAC own practice tests....much to my delight and not surprising considering the amount of errors found in Princeton's book I score 690 and 700 on those two tests. So, clearly Princeton's isn't so reliable. You might say it was because of the order, but from how the GMAT works, I doubt that I'd jump 100+ points overnight.
ANYWAYS, I took my test today and got a 680. I ended up rushing a bit on the math contributing to my slightly lower score but overall I'm happy about it. I also wanted to say thanks for the free GMAT study tools, specifically the question of the day + the flashcards.
PS - the second Princeton book (1037) referenced some math basics that the first one didn't even mention.