For high-achieving GMAT students who are practicing hard but still not hitting their target score.
You do not need more random practice.
You need to identify the exact timing leaks, decision mistakes, and Quant patterns holding your score down — then fix them with a clear execution plan.
I help you find what is breaking under timed pressure so your next round of practice is focused, measurable, and strategic.
Georgetown MBA • Former Sony Engineer • 100+ Five-Star Reviews
You Are Probably Not Missing More Content
If you have been studying for months, watching videos, doing practice questions, and reviewing explanations — but your GMAT Quant score is still stuck — more practice is probably not the answer.
The problem is usually not effort.
It is that your process breaks under pressure.
You may understand the solution after the fact.
You may even know the math.
But during the test, you are losing points because you recognize too late, choose too slowly, stay too long, or repeat the same decision mistakes.
That is why we diagnose first.
What We Diagnose
Most GMAT Quant plateaus are not caused by “not knowing enough math.”
They are caused by hidden execution leaks that show up under timed pressure.
Pattern Recognition
You know the concept after seeing the solution — but you do not recognize it fast enough when the clock is running.
Timing Decisions
You spend too much time trying to save hard questions and end up losing easier points later.
Method Selection
You know the math, but you choose the slow path when estimation, number picking, backsolving, or logic would get you there faster.
Error Diagnosis
We do not stop at “careless mistake.” We identify the decision that caused the mistake — and the rule that prevents it next time.
Test Execution
We train the full process: reading, setup, solving, timing, and deciding when to push, pivot, or let go.
Once we identify the leak, practice becomes targeted instead of random.
My Approach: Diagnose First. Then Train.
I do not start by throwing more content at you.
I start by identifying what is actually costing you points.
We look at how you read, recognize, set up, solve, time, and review GMAT Quant questions.
Then we build a system around your specific bottlenecks.
The goal is not to know more math.
The goal is to make better decisions under pressure.
Why Work With Me?
I am Diana Hariz, a Georgetown MBA and former Sony engineer.
I specialize in helping GMAT students break through Quant plateaus by improving strategy, timing, and execution.
I have 100+ five-star reviews and have worked with students preparing for competitive MBA programs.
My background combines engineering, business training, and years of one-on-one tutoring experience.
I do not just teach formulas.
I help students think clearly, solve efficiently, and perform under pressure.
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