Build strong foundations
Monthly or end-of-term check-ins find and patch gaps early, before they show up when it counts. Finished Algebra 1 early? We start on real SAT questions at their level to build test-taking instinct.
1:1 SAT Math mentorship
Master SAT Math from a perfect scorer.
Private tutoring that rebuilds math foundations and teaches the strategies the digital SAT rewards. Taught by Eva Leung, a Cornell and Columbia STEM graduate who scored in the top 1%.
Now enrolling for the Fall cycle
In person in Belmont
Online anywhere
Founding Local Student offer: 25% off for 2 local Fall-cycle students, in exchange for sharing anonymized score growth.
3 / 10HardAlgebraMethod: # of solutions
In the system of equations 3x + 2y = −4 and kx + y = 5, k is a constant. If the system has no solution, what is the value of k?
A−3
B2/3
C3/2
D6
Correct · 38 s (SAT pace ≈ 95 s)Match slopes: k/1 = 3/2
Every miss becomes a method to practice
Eva LeungYour tutor
800Perfect SAT Math score
Top 1%Overall SAT score
Cornell · ColumbiaB.S., M.A., M.Phil.
3Published research papers
Who it's for
Built for families who plan ahead
Students do best when they start early and practice the right things. Here's what we focus on, based on your student's grade and math level.
Close gaps and master strategy
Steady weekly or monthly work that closes gaps for good, so test prep becomes review and strategy instead of a last-minute cram. Then we layer in SAT question patterns, Desmos strategies and full official practice tests to build pacing and confidence.
Diagnose and optimize
A thorough diagnosis of timed performance, a focus on the concepts that will move the score, and advanced Desmos calculator strategies.
+50 to 200+points on SAT Math
The earlier you start, the bigger the gain.
Built for families aiming for top colleges, National Merit and the Ivies, where there’s little room for error.
The Keystone method
Every session starts from data
Students practice in the Keystone portal, built for the digital SAT. It pinpoints exactly which methods and concepts your student is missing so lesson time goes where it counts.
- 1
Diagnostic
Ten official questions, easy to hard, each testing a different problem-solving method.
- 2
Targeted follow-up
The next set is built from the misses and from answers that were right but slow.
- 3
Real test conditions
A Bluebook-style quiz with the College Board Desmos calculator, the reference sheet and a timer.
- 4
Tutor review
I replay each student's whiteboard work and Desmos screen to see how they got their answer, not just whether it was right.
Monthly progress report
Each month you get accuracy by topic, timed-set pacing and the mistakes we're still working on. Official practice tests are scheduled at key points in the plan.
How it works
From first call to a custom roadmap
- Free · 30 min
Consultation
A 30-minute phone or video call about your student's goals and timeline.
- Free · 30 min
Score review
Bring a PSAT, SAT or practice-test score and we go through it together. No score yet? We do a short diagnostic instead.
- Deposit
Reserve a spot
A deposit equal to one session holds your weekly slot and is credited to the first session.
- Week 1
Evaluation & roadmap
A full evaluation and a written roadmap, then regular sessions begin.
A typical 60-minute session
- Warm-up
- Homework review
- New concept or problem type
- Mixed review or challenge set
Between sessions: assigned practice in the portal, goal-setting and progress tracking.
Pricing
Simple, per-hour pricing
Every plan includes 1:1 instruction, a custom roadmap and monthly benchmarking.
Single session
$150 / hour
Pay as you go
- Targeted help before a test
- Try a session first
Weekly plan
$120 / hour
10-session minimum, pay as you go
- Custom roadmap
- Homework in the portal
- Monthly progress report
Founding local student
$90 / hour
Same as the weekly plan
- 25% off for local Fall-cycle students
- Share anonymized score growth
Pay after each session by Zelle or Venmo (the first session is covered by your deposit). Sessions are online or in person in Belmont. Sessions at your home are available by arrangement, with rate and availability discussed separately.
Meet Eva Leung
Ivy League tutor and scientist
- BSCornell UniversityB.S., Human Biology
- MAColumbia UniversityM.A. & M.Phil., Nutrition and Metabolic Biology
- 800Top 1% SAT scorerPerfect Math section
- 5yBiotech professional ↗5 years in research and industry · LinkedIn
- 3Published researcher ↗3 peer-reviewed publications · PubMed
I combine high-yield SAT strategies with the foundational math behind them, and I customize every plan to the gaps your student actually has.
My background is in academic and biotech research, which is where the Keystone approach comes from: measure first, change one thing, measure again. I've also worked in Ivy League admissions consulting, so I can help your family see how the SAT fits into the bigger college plan.
I keep a small roster on purpose. Each student gets my full attention, a written roadmap, and honest monthly updates for parents.
Questions parents ask
FAQ
When should my student start?
Most students take their first SAT in the spring of junior year, then retake it to raise their score. The last test dates that count are October of senior year for early action or early decision, and December for regular decision. Start prep at least 3 months before the first test. The earlier you start, the bigger the gains. See what we focus on at each grade.
What happens in the free score review?
You share a recent PSAT, SAT or Bluebook practice-test score report. In 30 minutes we look at which question types and topics lost points, whether the cause is content, strategy or pacing, and what to work on next. If your student has no score yet, we use a short diagnostic instead.
Online or in person?
Either. In-person sessions are in Belmont. Online sessions work anywhere, with the same portal, whiteboard and Desmos tools.
Is this prep for the new digital SAT?
Yes. Everything is built for the digital SAT (2024 format), including Desmos calculator techniques and Bluebook-style practice.
How will I know it's working?
Each month you get a short report with accuracy by topic, timed-set pacing and the repeated mistakes we're still fixing. Official practice tests are given at key points in the plan to measure progress.
When are sessions available?
Monday to Friday, daytime and evening, with some weekend times. Spots are limited, so join the interest list if you're planning for a future cycle.
How does payment work?
A deposit equal to one session reserves your spot and is credited to the first session. After that, you pay after each session by Zelle or Venmo.
Get started
You'll talk with me directly, not a call center.
Book a free 30-minute consultation
You'll talk with me directly, not a call center.Pick a time online, or call, text or email to set up a phone or video call. We'll talk about your student's goals, timeline and whether Keystone is the right fit.
- Call or text
- (510) 438-1107
- keystonesatmath@gmail.com
- Inquiries
- Mon–Fri, 10 AM–4 PM PT
- Consultations
- By appointment
Free · 30 minutes
SAT score review
Send your student's latest PSAT, SAT or Bluebook practice-test score report. We'll go through it together, online or in person, and you'll leave knowing:
- which question types cost the most points
- whether the misses are content, strategy or pacing
- exactly what to work on next
No obligation.
Stay in touch
Not ready yet?
Join the interest list and you'll get a check-in when the next cycle opens.