Seattle · In person and online

Biology, taught by someone who does it for a living.

I'm Thor Breitbarth. I was educated at Boston University, then spent six years doing research at elite organizations: the Broad Institute of MIT and Harvard, Seattle Children's, and Dyno Therapeutics. I take a small number of students each term and teach the subjects I have excelled in: biology, history, writing, and the AP and SAT exams behind them.

I'm based in Seattle. Sessions can be at a library, café, your home, or online. High school through college.

Thor in the water in a snorkel mask, smiling at a horn shark he is holding at the surface Thor in a lab coat and gloves holding a culture flask, smiling
Six AP 5sIn the subjects I now teach
Six years in researchBroad Institute of MIT and Harvard · Seattle Children's · Dyno Therapeutics
B.A. Biology, Boston UniversityDean's Distinguished Research Fellowship
Six to eight studentsPer term, on purpose

What I tutor

Targeted help from a specialist.

These are the subjects I scored 5s in and, in the sciences, have done for a living. I'll also teach you how top scorers THINK, not just test-day tricks (although I've got some of those too).

Biology

AP Biology · UW BIOL 180/200/220 · Genetics

My bread and butter. I have a competitive degree, plus years working with truly the best scientists in the world.

History

AP US · AP World · AP European

We'll cover content, how to connect the dots, and how to write a winning thesis or DBQ.

English & Writing

AP Lang & Lit · Essays

Learn to read and write analytically. The books you read in class are your best teachers!

Test Prep

SAT · PSAT · AP exams

Content, strategy, and confidence. Approach the tests like a top scorer.

Also: Algebra · Geometry · Pre-Calc · Chemistry · Physics · Biotech and other sciences

Thor crouched on a rock at the edge of a forest creek, looking into the water Thor standing arms-out inside a fossil megalodon jaw at a museum Thor in the ocean, grinning and holding a sea creature up to the camera, palm trees behind Thor hugging the trunk of a giant old cedar Thor in a yellow beanie looking through binoculars in a bare winter forest

How I teach

Learn to think, not just memorize.

I believe every student can get there, and there are many roads to success. So there's no script: I read your last few tests or assignments, we figure out how to play to your strengths, then we'll spend the majority of our time on what is actually costing you points.

01

Understand the themes and systems. Synthesis beats knowledge.

We'll work through problems out loud so I can see exactly where the logic breaks. With the right fixes, you can approach any new problem systematically instead of just drilling flashcards.

02

I've done the science, and I can translate it.

Every question on the AP Bio exam comes from real science that I've used at the bench. We'll wrap our heads around tricky concepts and understand why they matter, which is what really holds up under pressure on a real exam.

03

There are no failures! Everything is data.

I read your scores the way I read lab results: what changed, what didn't, and what to do differently next week. We double down on our successes, we learn from our mistakes. Step by step, you will improve.

Rates

One rate. No packages required.

Every student starts with a free 20-minute intro, so we both know it's a fit before we begin.

Tutoring, any subjectBiology, science, history, writing, SAT and AP prep$75per hour
Intro sessionWe'll explore fit, goals, and a plan for session oneFree20 minutes
College admissions guidanceEssay coaching and application strategyInquire

In-person in the Seattle area and online. Save 10% with a prepaid block of 5 sessions. A sliding scale is available for families who need it.

Book a free intro Weekly, monthly, or one session before a big test.
Small roster
6 to 8

students a term, on purpose. Quality beats quantity for tailored lessons. When it's full, I'll keep a waitlist.

Thor in a white shirt in front of the Pyramid of the Sun at Teotihuacan

In their words

What people say.

Thor was a fantastic teacher and brought his passion to each lesson. His first step was understanding my goals & what I wanted to get out of learning and helped build lesson plans with my goals at the forefront. In my lessons I got to learn at my pace and didn't just get told tasks but had everything behind what I was learning explained. Thor is super patient and encouraging and made the little victories feel huge. I'd recommend him to anyone, beginner or advanced, looking for well structured and fun lessons.

Andrea · former student

I had the pleasure of working with Thor, and I was consistently impressed by his ability to explain complex concepts clearly and connect with students. He's knowledgeable, patient, and just really loves learning and teaching. He also has a real knack for differentiating his instruction, picking up quickly on how each student learns best and adjusting his approach accordingly, rather than relying on a one-size-fits-all method. I would gladly recommend him to any student looking for a thoughtful and effective tutor.

Johnathan Ricks · Marine Science Teacher and former colleague

For parents

How it works, and what to expect.

  • Background checked, twice: through US Soccer this year, and through the Boys & Girls Club last year. Trained in working with minors by both.
  • Sessions happen in public places by default, a library or a café, or online. Your home works too. Parents are always welcome to sit in.
  • You're the client. I'll communicate with parents directly, and anything I send a student is educational and visible to you.
  • Twenty-four hours' notice to cancel or move a session, no charge. Life happens, just tell me.
  • References always available on request.
When should we start AP prep?

Sooner is always better for understanding the content. For focused exam prep, eight to ten weeks is ideal: enough time to find the gaps, fix them, and practice under real conditions. Most families call three weeks out. Please don't be them! But if you are, call anyway and we'll make it count.

What does the first session look like?

Bring a recent test or assignment. I'll read it the way I'd read a lab result, we'll figure out where the points are actually going, and we'll leave with a plan for the term. If the free intro feels right, we can get straight to work that same day.

Online or in person?

Both! In person around Ballard and greater Seattle, online anywhere. Online works especially well for writing and history. Hands-on science benefits from being in the room, but it's not required.

Do you tutor college students?

Yes! Intro biology, genetics, and cell and molecular biology are where I'm most useful, because I've spent six years doing the work those courses are preparing you for. Same rate, same free intro. Online works well for college schedules, and I'm in Ballard if you'd rather meet in person.

What if it is not a fit?

Then it's not a fit, and nobody's paid for anything. That's exactly what the free intro is for. I'd rather you find the right tutor than the closest one.

Also offered

Beyond the classroom.

Tutoring is the main event. These two are things I love and do well, and I'm happy to offer them alongside it.

Thor on stage playing a keytar under stage lights, a guitarist beside him

Piano instruction

From Beethoven to blues, technique to music theory, I love to teach music. Advanced lessons available for intermediate players and adult returners, from a competition-level pianist (Seattle International Piano Festival; KMTA scholarship; WMTA State Honors Recital, Allston Band of the Year). Live lessons, online, or annotated feedback on your recordings all available.

Catch me playing at the Ballard Farmers Market most Sundays!

College admissions guidance

Need guidance on targeting competitive schools? We can work together on essay coaching and application strategies.

Thor and six friends in red graduation gowns throwing their caps in the air in front of a stone chapel

Get started

Book a free 20‑minute intro.

Tell me what your student is working on and where they want to get. We'll find the right fit, no pressure and no cost.

Prefer to talk? 360-626-3929
Email works too: thor@tutorthor.com
Thor on a small boat in scuba gear, smiling, blue water and a beach behind him
Call Thor Free intro