K-12 Private Tutoring · San Leandro, CA & Online

Learning that
compounds.

The fundamentals you build early pay dividends for life.

Book a Free Consultation

30 minutes · free · no obligation

About

The right foundation
changes everything.

Learning works exactly like investing. The foundational skills a student builds early compound over time — each concept mastered becomes the base for the next. Miss a layer and the structure gets shaky. Catch it early and everything accelerates.

I'm Julia, a K-12 tutor with 12 years of experience, more than 100 students tutored, and a background in molecular biology from 5 years in the biotech industry. That combination isn't accidental — understanding how complex systems build on themselves shaped how I think about learning. I don't just help students get through this week's homework. I build the systems that make every week easier than the last.

I keep my roster of families small so every student gets the depth of attention this approach requires. Sessions are online across the Bay Area and beyond, or in-home in San Leandro, Hayward, and Oakland.

Portrait of Julia Poniatowski, K-12 tutor and founder of Compound Tutoring
12

Years Tutoring

K-12 students across every subject and skill level.

100+

Students Tutored

From foundational skills to test prep and college essays.

5

Years in Biotech

Molecular biology background informs how I teach complex systems.

K–12

All Grade Levels

Elementary essentials through high school entrance exams, SAT, and ACT.

How It Works

Simple, structured,
effective.

01

Book a Free Consultation

A 30-minute diagnostic session to identify exactly what's getting in the way — the root cause, not just the symptom. You leave with clarity and at least one actionable next step, whether we work together or not.

02

Build the System

We design a personalized learning strategy around how your child actually thinks, studies, and retains information. Not a generic plan — a specific one.

03

Watch It Compound

Consistent sessions, async support between them, and a method that builds on itself. Progress accelerates the longer we work together — that's the whole idea.

Results

What families
say.

“Shortly after our daughter began tutoring with Julia, she made honor roll for the first time since starting middle school. Math was the class holding her back — Julia tailored the lessons in a style she could learn and retain. We would recommend Julia to anyone.”
Parent · Middle School · San Leandro
“Other learning solutions we tried all had a single ‘proven system.’ Julia takes a truly individual approach — she works to understand what motivates each of our twin boys and builds a learning strategy that suits them. Over the last year, their confidence, their grades, and their perspective on academics have significantly improved. Our son went from a grade behind in math to an A in Algebra I, A's in for-credit summer geometry and Spanish I courses, and an invitation to honors Algebra II as a sophomore. Julia truly cares, and we feel extremely fortunate to have her on our side.”
Parents of Twins · High School · Los Altos Hills

Packages

Find the right
fit.

All monthly packages include four sessions and async support — up to two questions per week via voice memo or text, answered within 24 hours.

Online or in-home: academic packages are available online or in-home — in-home comes as extended 1.5-hour sessions in San Leandro, Hayward, and Oakland, so you skip the driving and waiting entirely — and every in-home session ends with a brief parent debrief. College essay coaching, test prep, and summer course support are online only.

Grades K–5

K-5 Academic

$440 / month online

4 × 1-hour sessions · all core subjects
In-home: $820/month (4 × 1.5hr)

Building the foundation everything else depends on — math, reading, writing, and science. Sessions are built for young attention spans: focused one-on-one work, a game to end on a win, and dedicated parent time — a recap of what we covered plus simple activities to reinforce it during the week. You're not just buying a session; you're getting a weekly plan.

Grades 6–8

Middle School Academic

$520 / month online

4 × 1-hour sessions · all core subjects
In-home: $940/month (4 × 1.5hr)

The pivot point. The study habits built in middle school follow students into high school and beyond. All core subjects plus Spanish — we close the gaps, build the habits, and make sure they're walking into high school with the skills and confidence to compete.

Most Popular · Grades 9–12

High School Academic

$600 / month online

4 × 1-hour sessions · all core subjects
In-home: $1,060/month (4 × 1.5hr)

Where grades start to matter. Consistent support across core subjects and Spanish, tailored to your student's course load, goals, and timeline.

Grades 11–12

College Essays

$750 / month

4 × 1-hour sessions · online only

The application is a positioning document. School strategy, personal narrative, supplemental essays — we craft a story that sounds like your student at their best.

SAT · ACT

High School Exam Prep

$1,950 / month

8 × 1.5-hour sessions (twice weekly) · online only

Hard deadline. Real stakes. Twice-weekly sessions engineered around your target test date: homework review, content, and strategy every session, with weekly practice test scoring, error analysis, and progress reports.

SSAT · ISEE · HSPT

Private School Entrance Exam Prep

$2,100 / month

8 × 1.5-hour sessions (twice weekly) · online only

Admissions tests are one-shot, high-stakes exams — the ISEE can only be taken once per season. The twice-weekly structure I've refined over years of entrance exam tutoring: homework review, content review, and strategy in every session, with deep practice test review throughout.

For-Credit Summer Courses

Summer Course Support

$450 / week

3 hours weekly, scheduled around your course's deadlines · online only

Taking a for-credit summer course through UC Scout, Silicon Valley High School, BYU Independent Study, or your school's summer program? The course provides the credit — we make sure it sticks. Compressed courses move a full semester in as little as ten weeks, and students who fall a week behind rarely catch up. Three hours of one-on-one tutoring weekly, scheduled around your course's actual deadlines, plus async question support between sessions. Drop-in sessions available at $165/hr.

FAQ

Common
questions.

Cost & Value

Bay Area private tutors commonly run $50–150+ per hour, and rates climb with experience and specialization. I price by monthly package instead — starting at $440/month for four weekly sessions plus async support — because consistency is what actually moves grades, not one-off hours. Every package is listed above with its exact price.

One-on-one tutoring is one of the most effective academic interventions there is — but only when it's consistent and tailored. A tutor who diagnoses the real gap and builds a system around your child pays for itself in confidence, grades, and less homework conflict at home. A tutor who just supervises homework doesn't. That difference is exactly what the free consultation is designed to sort out.

Because learning compounds and one-off hours don't. A monthly package locks in a consistent weekly rhythm, includes async support between sessions, and removes the scheduling friction that kills momentum. You're not buying hours — you're buying a system.

Here, yes. Online packages cost less than in-home because there's no travel time built into the rate — same tutor, same method, same materials. In-home sessions run longer (1.5 hours) and include a parent debrief, which is what the premium covers.

Getting Started

The common signs: grades slipping despite effort, homework turning into nightly battles, “I'm just bad at math,” or a teacher flagging gaps. Any one of these usually means a missing foundation layer — and the earlier it's caught, the faster everything after it recovers.

There's no single right age — there's a right moment: when a gap appears. K-5 students build the foundation everything else sits on, so support there compounds the longest. Waiting rarely helps; gaps don't close themselves, they stack.

Look for three things: a diagnosis-first approach (not a one-size curriculum), a plan built around how your child actually learns, and regular communication so you're never guessing about progress. Credentials matter less than method and fit.

Ask how they figure out what's actually wrong, what a typical session looks like, how they report progress, what happens when a session is missed, and how long their students typically stay. Vague answers to the first question are the biggest red flag.

Here, the first conversation is a free 30-minute consultation — a diagnostic, not a sales call. We pinpoint where learning is breaking down and you leave with a clear read and at least one actionable next step, whether or not we work together.

Centers run students through a standardized curriculum in small groups. A private tutor builds the plan around your child — their gaps, their pace, their motivation. If a “proven system” hasn't worked for your student, that's usually why.

Over 12 years of tutoring, I've worked with many students with ADHD, dyslexia, and other learning differences. I use a systems-based approach that adapts to how each student learns, rather than expecting every student to work in the same way. During the free consultation, tell me where your student gets stuck and what has or has not helped before, so we can discuss whether my approach fits their needs. My role is tutoring: I am not an educational therapist or a specialist. If your student needs dedicated educational therapy rather than the support I provide, I'll say so honestly in the free consultation.

I offer the free consultation because choosing useful support starts with understanding what is getting in the way. It is a free, 30-minute introductory session focused on identifying the underlying learning obstacle, rather than treating the most visible symptom as the whole problem. The purpose is not to fit a generic lesson into half an hour; it is to clarify what needs attention first. You leave with that clarity and at least one actionable next step, whether or not we work together. I want you to have a concrete basis for deciding what your student needs, not just an impression of what a tutoring session feels like.

Results & Scheduling

Weekly is the baseline that builds momentum; test prep and serious catch-up run twice weekly. Less than weekly rarely works — the thread between sessions breaks and each meeting starts from zero.

Habits and confidence usually shift within the first four to eight weeks; grades follow over a grading period, since they measure a whole semester's work. The honest answer is that durable results build — that's the compounding, and it's why quick-fix tutoring keeps disappointing families.

Short-term triage before a big test can help, and I do it — but a grade is a lagging indicator. What raises it for good is fixing the gap underneath and building the study system that keeps it fixed. That's the work.

Usually the resistance is protecting them from feeling behind. One-on-one work removes the audience, and the plan starts where they can win. Most reluctant students come around within a few sessions once effort starts visibly paying off.

Informed, not homework-police. You'll get brief progress updates after sessions, K-5 packages include dedicated parent time, and in-home sessions end with a debrief. Your job is encouragement and consistency; the teaching is mine.

I send brief progress updates after sessions, so you hear about your student's work directly from me rather than relying only on what they remember to tell you. Between sessions, you can send up to two questions per week, and I'll respond within 24 hours. For test prep families, I also provide weekly practice test scoring, error analysis, and progress reports. Scores show performance, while error analysis helps make the mistakes behind those scores visible. Beyond those updates, look at grades, confidence, and independence together: whether schoolwork is improving, whether your student approaches it with more confidence, and whether they need less help getting through it. Those are the outcomes that matter, not simply whether a session felt productive.

Subjects & Skills

I tutor all core K-12 subjects: math through calculus, reading, writing, and science, plus Spanish. Biology and chemistry are my deepest subject areas, drawing on my molecular biology background and five years working in biotech. For high school test prep, I work exclusively on the SAT and ACT. I also prepare students for private school entrance exams: the SSAT, ISEE Upper and Lower Level, and HSPT. For students taking for-credit summer courses, I provide one-on-one tutoring support with the coursework. The accredited provider, such as UC Scout, Silicon Valley High School, BYU Independent Study, or the school's summer session, grants the credit; I do not. If your student needs help outside these areas, bring that question to the free consultation, and I'll tell you directly whether I'm the right tutor.

Math is the most cumulative subject there is — this year's struggles are usually last year's gaps. Effective math help starts with a diagnosis of where the foundation cracked, then rebuilds from there while keeping up with current classwork.

Yes — and early literacy is the highest-leverage tutoring there is, because every other subject runs on it. We work on comprehension, structure, and writing that says what the student actually means.

Both, deliberately. Homework is the raw material — it shows exactly where understanding breaks. But the goal is always to get ahead of the class, because students who preview material stop surviving school and start commanding it.

Yes. Strong students plateau when school stops challenging them. We use the same system in the other direction — extending, deepening, and getting ahead, including honors-track support and summer acceleration.

That's the core of what I do. Content help fixes this week; study systems — planning, note-taking, retrieval practice, test strategy — fix every week after. It's step two of how I work with every student.

Test Prep

Three to six months before the target test date, which for most students means starting junior fall for a spring test. My prep runs twice weekly on an eight-sessions-per-month structure, engineered backward from your date.

Take a timed practice test of each and compare. The ACT rewards speed and straightforward questions; the SAT rewards careful reasoning with more time per question. Colleges accept both equally — pick the one your student scores better on, then commit.

It varies by starting point and effort, and anyone promising a specific number is selling something. What reliably moves scores: weekly full practice tests, error analysis that shows exactly where points are leaking, and strategy built around your student's pattern — which is precisely how my prep is structured.

The three main private school admissions tests — which one your child needs depends on the target school. They're one-shot, high-stakes exams; the ISEE can only be taken once per season, so preparation matters more than for almost any other test.

Three to six months before the test date, and most admissions tests happen fall through early winter — so for most families, prep starts in spring or summer. Starting late is the most common and most avoidable mistake.

Summer

Students lose roughly one to two months of learning over summer — math takes the biggest hit because it's rarely used casually. The students who return in fall ahead of where they left off aren't lucky; they did light, structured work while everyone else forgot.

For students who fought hard for their spring gains, yes — protecting those gains costs far less effort than re-earning them in September. Summer is also when getting ahead is cheapest: no homework competing for energy.

Yes — summer is the one season where school isn't consuming the schedule. Options range from previewing next year's material to full support for a for-credit summer course, which puts a real grade on the transcript in half the time.

Logistics

I run online sessions over video call, using a shared digital whiteboard and shared documents to work with your student in real time. The whiteboard lets us work through problems together, while shared documents let us look at the same text or written work. Your student needs a computer or tablet with a camera and a quiet place to work. Set up somewhere they can stay focused and participate, rather than simply listen to a lesson. Most families find online sessions just as effective as in-person tutoring, with the practical advantage of being easier to keep consistent. I offer online tutoring everywhere, so location does not limit access to sessions.

I offer in-home tutoring in San Leandro, Hayward, and Oakland only. I handle every session myself, and keeping that service area tight prevents travel from compromising the time and attention I give students. My in-home roster is limited, so being within those three cities does not automatically mean I have an opening. If you live outside that area, online tutoring is the option I offer. Online sessions are available everywhere and are also an option for families within my in-home service area.

Yes — online sessions remove the commute, scheduling flexes around practices and seasons, and async support keeps questions moving between sessions. Busy students actually benefit most from having a system, because their margin for wasted study time is zero.

Recent tests or quizzes (including the bad ones — especially the bad ones), current homework, the class syllabus if there is one, and any question they were embarrassed to ask in class. Graded work is the best diagnostic data there is.

You can reschedule a session at no charge with at least 24 hours' notice. If you cancel with less than 24 hours' notice, the session is forfeited. I make exceptions for illness and genuine emergencies, so let me know when either is the reason you cannot attend. I work alone and keep my roster small; advance notice matters because that session time has been reserved for your student. Billing is handled through a monthly invoice.

Contact

Ask me anything.

Not ready to book yet? Send a note and I'll answer it myself. Tell me your student's grade, the subject in question, and what's getting in the way.

Replies within one business day

Start building something that
compounds.

Book a free 30-minute consultation. We'll figure out exactly what your student needs — and whether we're the right fit to get there. I keep my roster small, so current openings are limited.

Book a Free Consultation