Hello jit007, thanks for your question.
Your overall GMAT score falls within the middle 80% range for a school such as Duke, whose mean score is 697 but whose range is 640-750. That said, your verbal score (51%) will be a challenge, especially since you come from an overrepresented demographic that scores disproportionately high on the GMAT.
I do think your CEO experience is where you can differentiate yourself, if you can call upon “moments” where you truly led your organizations, motivated others, drove results, and took initiative. To the degree that you can demonstrate your leadership in your extracurricular activities, as well, the more competitive you will be.
I think you should also craft a compelling story that connects your experience with your post-MBA goals. What exactly do you want to do after business school? How exactly will an MBA help you pursue those short term and long terms goals? The more specific you are, the better.
In summary, your GMAT will certainly not bar you from programs like Duke or UVA, but you will have to leverage your leadership experience to differentiate yourself. I think Harvard is a reach for you.
Best of luck,
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