Hi Dave 1234,
Based on your practice test scores and the amount you have already studied, I think that a 150-point increase in 4 weeks will be difficult to achieve. To make the jump you need, (in both quant and verbal) you first must solidify your foundational knowledge; only then will you be able to attempt mastering more advanced material . New knowledge tends to be based upon a solid understanding of earlier concepts. And without solid knowledge, you are merely burning questions.
I see that you have been relying heavily on
the Official Guide as a primary study resource. This reliance may be the reason your quant and verbal scores have plateaued.
The Official Guide is a great resource for practice because it has official questions from past GMATs; however, the Guide does not provide enough questions on each topic to provide full exposure to all the important issues on the actual test. Additionally, the questions are presented in a random order, so it’s challenging to use the
OG for targeted learning.
Thus, your next move should be to find a study resource that allows more focused learning and practice of one topic at a time: e.g, sentence structure or good reasoning practices for verbal; number properties or rate problems for quant. For example, if you are learning about percents, you want to make sure you learn everything possible about percents, e.g., percent less than, percent greater than, variable percents, percent profit, percent change. After that, be sure that you practice a lot of questions (50 or more) just on percents. The results of that practice will help you to determine how well you have mastered that particular topic. Following this study strategy of targeted practice should help you to improve both your verbal and quant scores.
Once you feel you have fully learned all the important GMAT topics, but not before, start taking Official MBA.com tests, as those exams provide the most accurate exam experience and use the most accurate scoring algorithm. You can start with the
two free exams. After that you can purchase
exam pack 1 and
exam pack 2 Also, read
my article that provides some actionable steps that you can follow to help achieve your GMAT score goal.