Clarity Before Speed
Students learn why a method works before trying to accelerate execution.
About
A Process-First Approach to Mathematical Excellence
Epsilon was built on a simple belief: students who learn to think clearly, deeply, and independently can grow far beyond any single exam cycle.
Founder and Lead Instructor
Stephen Yoo
Stephen Yoo founded Epsilon to build durable mathematical thinkers, not short-cycle score gains. His instruction combines rigorous standards, process-first coaching, and direct communication with families.
Selected Qualifications
- Former problem writer for AMC 12; currently an editor for the AIME
- 15+ years of mathematics teaching experience.
- Current mathematics researcher at a top hedge fund.
- Guest lecturer at NYU.
- Scored 800 on SAT I Math in 4th grade.
- Qualified for AIME every year since 4th grade.
- Qualified for USAMO every year since 7th grade.
- Former mathematics researcher at Caltech, UC San Diego, and NYU.
Teaching Principles
Productive Struggle
Difficult problems are approached with structure, reflection, and revision.
Communication and Accountability
Parents receive honest updates on progress, effort, and near-term priorities.
What Parents Can Expect
- Clear starting assessment
- Regular progress notes
- Transparent recommendations on pacing and milestones
Start With Consultation
If your family values depth, discipline, and long-term growth, start with a consultation.
Apply for Consultation