Andy
Founder & Academic Director
The Architect
Sigma Was Built by Someone Who Spent Over 20 Years Across UK and International Schools — and Saw Exactly What Was Missing.
Andy is a UK-trained Mathematics educator who spent over 20 years leading education across high-performing UK and international schools — serving as Vice Principal, and continuing as a School Improvement Consultant. He has worked with hundreds of students across the full ability range, from those who believed they were "just bad at maths" to those competing for A* grades at international schools across Asia.
What he consistently observed was this: capable students were failing IGCSE Mathematics not because they lacked ability, but because they lacked a system. Tutoring was reactive. Teaching was inconsistent. Nobody had given them a coherent, progressive framework they could rely on.
The Sigma 6E Method™ is Andy's answer to that. It is not a set of tips or tricks. It is a complete pedagogical framework — one that he developed, refined, and now trains every Sigma tutor to deliver with precision.
20+
Years in UK & International Education
MEd
Masters in Education
NPQH
Headteacher Qualification
Our Educators
Every Sigma Tutor Is Trained in the 6E Method. No Exceptions.
Sigma does not operate as a marketplace. We do not recruit freelance tutors and assign them to students. Every educator who teaches at Sigma has been personally vetted, trained in the delivery of the 6E Method™, and certified before they enter a single cohort.
"This means that whether your child is in an early-year foundation cohort or a Year 11 exam booster group, the quality of teaching, the structure of the lesson, and the standard of feedback they receive is identical. Consistency is not an accident at Sigma. It's a guarantee."
— Andy, Founder & Academic Director
Our Students
Built for International IGCSE Students — Wherever They Are
Sigma's cohorts are designed for international school students studying Cambridge or Pearson Edexcel IGCSE Mathematics. Our timetable is structured around your timezone — not UK school hours. You don't need to find a local tutor who "knows the IGCSE syllabus." You need an academy that was built around it.
South East Asia
Singapore · Malaysia · Thailand
East Asia
Hong Kong · Japan · South Korea
Gulf States
UAE · Saudi Arabia · Qatar · Kuwait
* Due to legal restrictions, Sigma does not offer services to residents of Indonesia.
Want to Know More Before Booking?
We're happy to answer any questions about how Sigma works, how cohorts are structured, or whether the 6E Method is right for your child. Message us directly on WhatsApp.