Fantastic GMAT Test Banks

I took the self-study GMAT approach, and a friend recommended GMAT Club's test banks for the customizable question difficulty functionality. I found it immensely helpful to be able to efficiently spend my few days of last-minute studying by completely focusing on 700-level questions. Notably in the areas where my abilities were lacking, in data sufficiency and sentence correction, the question banks had hundreds of problems that helped me iron out the kinks in my knowledge and strategy, and actually improve my sentence correction to the point that I was 92nd percentile in Verbal. For those considering how to craft your study strategy, GMAT Club is an essential component, and gives the level of detailed explanation you'll need to raise your score.