Prime Factor Math Circle and School of Programming
Private
Prime Factor Math Circle and School of Programming runs summer camps and year-round enrichment for grades 2-10 in math, computer science, robotics, linguistics, and chess, from a main office in Redmond's Overlake area and a second downtown Redmond site. Its 2026 summer camps are listed as Data Science and AI, Board Game Design Lab, Scratch Masters, and From Castles to Crystals. The math program is enrichment rather than school catch-up, covering combinatorics, number theory, invariants, induction, and graph theory with an emphasis on logic and proofs. All new students must take an online placement test before enrolling, and Early Bird pricing is offered.
The practical details
We list only what the camp itself publishes, and programs change — dates, prices, ages and availability can all move after we check. Confirm the details on the camp’s own website and contact Prime Factor Math Circle and School of Programming directly before you register or pay. Last checked August 2026.
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★★★★★Marieta HorackovaGreat math school with wonderful teachers. Creativity & critical thinking applied to math far exceed anything our son can learn at school with poor math curriculum based on formulas. We are very happy with Robyn & Yulia for their engagement. Place to go for math
★★★★★Leon DubinskyAll three of our children have attended Prime Factor. Rather than standard test prep, they teach non-standard mathematics and lateral problem-solving. This foundation did not just generate an interest in STEM; it directly prepared our older children to succeed in rigorous university programs and transition into elite engineering roles. If you want to build genuine competence in math, physics, and programming, this place is exceptional.
★★★★★DOYA YThis is a great place for kids who want to learn math and programming. The teachers are wonderful and super supportive—Luba for math and Julia for Python. Both the math and programming lessons are fun and inspiring. My child keeps asking to come back!
★★★★★Marina SadovnikovaPrime Factor has been an incredible part of our children’s growth, and we are very grateful for the inspiring work they do! Both of our daughters have been participating in Prime Factor Math Circle classes for the last six years, and they absolutely love them. We’ve seen a huge impact on their logical thinking and mathematical skills, especially in how they find creative and elegant solutions to non-standard problems. Another thing we truly appreciate is that the curriculum overlaps with school material only slightly, just enough to support them, but not enough to make school feel repetitive and boring. Instead, it helps them develop a deeper, more flexible and creative approach to math. Highly recommend!
★★★★★Mihir DharamshiWe've been at Prime Factor for 4 years now for Math and Chess and we couldn't be happier. I absolutely love the way they teach math. Concepts are built slowly and deeply over years, not rushed or formula-driven. Algebra, for instance, was taught using balance scales rather than jumping straight to x's and y's. Combinatorics was taught without permute-and-choose formulas, focusing instead on real reasoning. The depth and love for the subject here are truly unmatched. Their Chess Program tends to fly under the radar but it's fantastic. Coach Andrey comes in incredibly well prepared every single week and his class review notes are so solid, they could honestly be published as a book. If you care about building a love for the subject in your kid, depth in thinking and strong conceptual understanding - Prime Factor is the way to do. This isn't a teach-by-rote money-minting math mill. Teachers genuinely love what they teach and they truly care about their students. 100% recommend.