r/GMAT • u/Strong_Jeff • 11m ago
Stuck at 515 after 1+ year and ~3,000 problems solved. What actually breaks a plateau?
TL;DR: 1+ year of prep, thousands of questions, a tutor, error logs, and my accuracy and mocks haven’t moved (stuck at ~515). Grinding questions clearly isn’t working for me. How did you actually improve when doing more problems stopped helping? What did you change in how you studied?
I'll try to keep this simple. I started prepping for the GMAT in June 2025 using TTP. It seemed like a great option given I had absolutely no basics or fundamentals (didn't pay attention in high school at all). Over the summer I completed the Quant and DI parts of the course and took my first mock in September 2025 (official mock 1). The result was abysmal in terms of my goals but I think it would’ve been a good improvement had I taken a diagnostic: 525 (Q78, V79, DI71).
I bought one more month of TTP, worked through the problems, and then used GMAT Club and Magoosh as question banks from Sept 2025 to January 2026. Solving problems led absolutely nowhere, so I took a break. Nothing I tried brought my accuracy up, though I admit I barely used an error log back then.
In June 2026 I decided to do this properly and started working with a tutor. All summer I studied ~2 hrs a day and more on weekends, while working on a startup abroad. We had three sessions a week, solved problems together, and I reviewed my error log much more often. I felt pretty good, especially in August when my Quant confidence went up. Then I retook official mock 1 in early September 2026: 495 (Q75, V80, DI69). I took it again a few days later and got 545, but I think that was familiarity with the questions.
In Sept 2026 I cut the tutor to once a week and started grinding GMAT Club, hoping volume would fix accuracy. It didn't. About 1,700 questions later (mostly 555–605 and 605–655), my accuracy hasn't moved. In mid-October I switched to a more structured routine:
- Quant: 10 medium questions from one topic, then review every mistake
- Verbal: 2 RC + 8 CR at medium, then review
- DI: 10 medium questions, then review
- A timed hour for pacing (or I would do the streaks method)
Official mock 2 a few days ago (end of Oct): 515 (Q76, V80, DI71).
Where I actually stand (from my error log and the mock):
- Accuracy is ~70% on 555–605 PS and ~66% on 555–605 DS, and it's been flat for two months.
- On the mock, DS went 2/8 and CR 2/9. The last 8 Verbal questions went 2/8 and I guessed the last 2 DI (pacing).
- RC is decent (9/10 in the middle of the Verbal section). Inequalities, probability and sets are mostly fine.
- Recurring mistakes: losing track of the base in percents/ratios (e.g., the total changes and I keep using the old one), calling DS statements insufficient when one is enough (C/E instead of A/B/D), and doing CR by gut feel without a clear method.
- I can build streaks on easy and medium questions
- No matter what I do, things just don’t click. I’m not becoming smarter at all. Although I know the plugging in, backsolving, and similar strategies, I can’t reason through the problems, I always try to work it out with formulas and whatnot. The whole things makes me feel like the most stupid person in the world and I don’t know if I’ll be able to overcome this.
Goal: Test date is Nov 30. I need 585+. I can postpone and take it in the first few months of 2027 as I aim for R3 MiMs and deferred MBAs (would definitely need to postpone for deferred MBAs as I’d require a much higher score). I currently study full time for this test.
My philosophy is that once you believe and work hard, you can achieve anything you want. Nevertheless, this test is breaking me and I don’t know what to do anymore.
My questions:
- If you plateaued around 500–550 and broke through, what actually changed?
- Is it worth switching to a structured course? If so, which one?
- I feel like once I figure out how to improve and set up a system for it, it should be doable. The thing is, I feel totally stupid and no matter what I try, the improvement just doesn’t happen. For those who have been in the same spot, how did you make the improvement happen?
- How do you turn reviewing a mistake into something that sticks, so you don’t make the same type of mistake again?
Wrote 90% of the text, but especially the stats are polished by Claude as I use it for analysis.
Thanks for reading!