The SAT Is a
Logic Exam.
We Teach It
That Way.
Gangnam Prep’s proprietary Logic-First Framework has guided students to 1500+ scores for over 17 years — in person in Diamond Bar, CA and online via Zoom nationwide. Trained at Seoul’s elite academies, refined across Southern California’s most competitive school districts.
One Proven Method.
Olivia Bang founded Gangnam Prep after training at Seoul’s most elite test prep academies — Hackers and Ivy Plan — and earning her degree from Johns Hopkins University.
Her Logic-First Framework isn’t a collection of tips. It’s a complete system for how to think about the Digital SAT — built over 17 years of one-on-one instruction with students across Diamond Bar, Walnut, Brea, and Fullerton.
Chain. A Specialist.
Gangnam Prep was built on one insight: the SAT is not a knowledge test — it’s a logic exam with a very specific structure. Once students understand that, everything changes.
Logic-First Framework™
Every question has a logical core. We train students to isolate it — replacing guessing with principled reasoning that holds up on every test date.
3-Round Scan & Strike™
A structured, proprietary pacing method that eliminates time anxiety and guarantees full module coverage — built for students with demanding AP and extracurricular schedules.
17 Years. Johns Hopkins. Korea’s Elite Academies.
Founder Olivia Bang trained at Hackers and Ivy Plan in Seoul before bringing that methodology to Southern California families for nearly two decades.
to Score 1500+
A complete Digital SAT prep ecosystem — from diagnostic to test day — built around your student’s specific gaps and goals.
Full Diagnostic Assessment
We begin every engagement with a complete Bluebook-style adaptive test. Every error is mapped by question type, skill domain, and timing pattern before we build your plan.
Personalized Study Plan
No two students get the same plan. Your diagnostic data, your test dates, and your target college benchmarks all shape a precision roadmap with measurable milestones.
Logic-First Instruction
Our flagship framework teaches students to decode the underlying logic of every question type in Reading & Writing and Math — eliminating guessing at its root.
Pacing & Timing Mastery
The 3-Round Scan & Strike method turns pacing from a weakness into a weapon — structuring each module for maximum point capture without sacrificing accuracy.
Bluebook Adaptive Mocks
Full-length adaptive practice tests that mirror the real Digital SAT experience — including the two-module structure, timing, and Desmos calculator access.
Progress Tracking & Debriefs
Every mock test is followed by a structured debrief. Students learn exactly why they missed each question — and how to apply the correction pattern on future tests.
Not a Generic Curriculum.
Diagnostic Assessment
Full Digital SAT simulation under timed conditions. Every result is analyzed before a single lesson begins.
Identify the Logic Pattern
Using the Logic-First Framework, students learn what each question type is actually testing — so they can apply one reliable approach across all variants.
Targeted Skill Drilling
We attack the specific domains driving score loss — grammar, rhetoric, data analysis, advanced math — with focused Bluebook-aligned practice.
Adaptive Mock Testing
Timed full-length mocks followed by Scan & Strike debriefs. Every correction gets locked in before the next session.
Logic-First Framework™
Every SAT question has a logical core. We train students to isolate it — stripping away complexity and answering from principle, not pattern-matching.
3-Round Scan & Strike™
A systematic timed approach to each module: scan for certainties, flag for return, strike on instinct. Eliminate pacing anxiety completely.
Bluebook Adaptive Strategy
Understanding the two-module adaptive structure and performing in Module 1 to unlock the high-score Module 2 pathway is a core competitive advantage.
Speak for Themselves.
Average Score Increase
Students who complete the full program average 200+ point improvements over their diagnostic baseline.
Target Score Range
Our curriculum is calibrated for students targeting 1500–1600 — the range that opens elite college doors.
Years of Specialization
17+ years of full-time SAT instruction across Diamond Bar, Walnut, Brea, and surrounding districts.
Digital SAT Focus
Fully transitioned to the Digital SAT. Every technique, drill, and mock is built for Bluebook.
Parents Are Saying
1500+ Score Plan?
We start every student with a free 30-minute diagnostic consultation — no obligation. Olivia will review your scores, identify your gaps, and map out a personalized path to your target score.
Online SAT Tutoring
Anywhere in the U.S.
Can’t make it to Diamond Bar? Gangnam Prep’s full Logic-First Framework™ curriculum is available 100% online via Zoom. Same instructor. Same proprietary methodology. Same results.
Students from across California, Texas, New York, and beyond have reached 1500+ scores entirely through online sessions with Olivia — working around demanding AP schedules and extracurriculars.
“100% online. Never met Olivia in person. Scored 1510.”
“The Zoom sessions were just as focused as in-person. Incredible method.”
Elite Results.
We serve students across the SGV and North Orange County — in person and online. Click your city for a dedicated page.
1500+ Score Strategy?
Book a free 30-minute consultation. We’ll review your diagnostic, discuss your target colleges, and map out a precision prep plan — no obligation.
Serving Diamond Bar · Walnut · Brea · Fullerton · Rowland Heights