Gangnam Prep
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Math type
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About
Elite Digital SAT tutoring — in person in Diamond Bar, CA and online via Zoom nationwide. Proprietary Logic-First Framework™ developed over 17 years. Johns Hopkins graduate, trained at Seoul's top academies. Students average 200+ point improvements. Free 30-minute diagnostic consultation.
Overview
Background checked
1 employee
18 years in business
Business hours
This pro hasn't listed their business hours.
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Services offered
Student grade level
Pre-kindergarten
Elementary school
Middle school
High school
Math type
Arithmetic / general
Pre-algebra
Algebra
Geometry
Work location
My customers travel to me
I travel to my customers
I work remotely (phone or internet)
Reviews
Exceptional 5.0
19 reviews
5
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4
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1
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BLM
May 30, 2025
From Google
Gangnam Prep's reply
Eli F.
Jun 2, 2025
From Google
We had a really great experience with Gangnam Prep for SAT tutoring. My child had already done some prep before, but the difference after working with Olivia was honestly noticeable pretty quickly. She has a very clear system for approaching the SAT, especially the reading and writing sections, and it helped my child stop second-guessing every question.What I appreciated most was that the sessions were very focused. Instead of just doing endless practice tests, Olivia actually teaches strategies for how to think through the questions. My child started recognizing patterns in the exam and became much more confident.Olivia is also very honest about where students stand and what they need to work on. She gives a good amount of homework and expects students to put in the effort, but the results reflect that.Overall, if youre looking for serious SAT preparation and someone who really understands the test, I would definitely recommend Gangnam Prep. It made a big difference for us.
Heeyeol B.
Jun 3, 2025
From Google
Gangnam Prep exceeded all our expectations.We were blown away by the professionalism and results-driven approach Olivia brings to each session. From the very first consultation, she assessed our sons strengths and weaknesses with precision and created a custom game plan that actually worked.Her insights into the SAT are unmatchedshe breaks down complex concepts in a way thats easy to understand and keeps students motivated every step of the way.Our son not only gained confidence, but he also improved his score by 180 points in just a few months. The quality of instruction, the structured pacing, and the personalized support make Gangnam Prep truly one-of-a-kind.Highly recommend for any family serious about top-tier college admissions!
Gangnam Prep's reply
Thank you so much for your thoughtful review. I truly enjoyed working with your son—he was focused, responsible, and determined from day one. Once he understood how to apply strategy step by step, everything began to click, and his confidence grew quickly. I’m really proud of his 180-point improvement, but even more proud of how he stayed disciplined and coachable throughout the process. Thank you again for trusting me with his SAT prep!
— Gangnam Prep | SAT Tutoring & Test Prep in Diamond Bar, Walnut, Chino Hills, Irvine & Orange County
Jihye K.
Jun 4, 2025
From Google
Ms. Olivia is the best instructor!!
Gangnam Prep's reply
Thank you so much! I truly appreciate the support and it means a lot to me. It’s always a joy working with dedicated students and families.
— Gangnam Prep | SAT Tutoring & Test Prep in Diamond Bar, Walnut, Chino Hills, Irvine & Orange County
Minchae K.
Jun 4, 2025
From Google
Gangnam prep helped me a lot to prepare for the SAT. Even though English isnt my first language and I had difficulties in English, after tutoring with Gangnam prep for a few months I could see my grammar and reading skills improved.The methods she taught me such as rereading questions and coming back to the same questions multiple times helped me impressively by making it into a habit. I still use this method during school and other tests.She is perfectly fluent in both English and Korean which effectively helped me by explaining vocabs I didnt know. Solving prep questions and prep tests multiple times like the real test made me prepared for the SAT without getting nervous on the real test.I really recommend you Gangnam Prep if you are looking for a tutor to efficiently improve your SAT scores!
Gangnam Prep's reply
Thank you for sharing your experience. I’m really proud of how much progress you made—not just in SAT Reading and Writing, but in your overall confidence with English. You worked hard to build strong habits and it showed every week. I’m glad the strategies like rereading and multiple rounds helped you approach questions more clearly, and I enjoyed being able to teach in both English and Korean when needed to make everything easier to understand. You were consistent, focused, and it paid off. Great job!
— Gangnam Prep | SAT Tutoring & Test Prep in Diamond Bar, Walnut, Chino Hills, Irvine & Orange County
Credentials
Background Check
Meehyun Bang