GMAT Scores stuck at 600

Hello Rich,

Thank you for the prompt reply. In both the GMAT, my CR score accuracy was 70%, RC accuracy was 50-60% and SC was 15-25%.

1. I am preparing for GMAT for the last 3 months. ( I began serious preparation in Oct. )
2. I am preparing for GMAT from a local Indian institute material and also subscribed for Verbal Magoosh, since I am aware of my poor verbal skills.
3. My goal score is 690-700. I am targeting Singapore colleges (NUS, NTU) and want to join 2016 class. What scores range will be enough to secure an admission here.
Also, help me with the colleges, I can apply to if I give my exam post 15th Jan (Since major colleges have R2 deadline by 15th Jan).

Regarding my preparation, I gave both the GMAT prep mocks ( 620, 650 scores Q49 in both), 800scores (600-670 scores) and kaplan test prep (660, 650, 670,680, 650). Based on these scores, I estimated my probable scores in the range of 650-700. In all these mocks Quant scores were in 48-50 range but verbal scores ranged from 24-37. I have also completed most of the Magoosh verbal material and the predictable score is 29-36.
This big range of verbal scores is a big concern for me.


I did some analysis on the verbal scores and found that

SC:
1. 100% accuracy in 500-600 range questions.
2. 50% accuracy in 600-700 range questions.
3. 10-15% accuracy in 700+ range questions.

Here, the main topics of concern are: Modifiers, Idioms, Rhetorical Constructions.

I completed all the SC questions from GMAT club yesterday and found the same trend repeating.

CR:
1. 100% accuracy in 500-600 range questions.
2. 70% accuracy in 600-700 range questions.
3. 40-50% accuracy in 700+ range questions.

Here questions based on inference, boldface are a concern

RC
1. 100% accuracy in 500-600 range questions.
2. 60% accuracy in 600-700 range questions.
3. 30-40% accuracy in 700+ range questions.

The inference based question are a major concern. Also, when the passage are based on mythology, law, history etc, I tend to doze off and cant concentrate. (A typical Indian Engineer Syndrome)

Now, armed with all these analysis, I am not sure of how should I prepare since I have to join MBA institute in 2016.

Please help.

Thanks in advance.

Regards.