01
Curriculum standard
One syllabus for every affiliated centre, so that a student in one city is measured exactly as a student in another.
Global Japanese Soroban Development Board
The standard behind the certificate
GJSDB sets the syllabus, the examination and the grading used by affiliated Soroban centres, and issues the certificate a student receives at the end. Every certificate carries a permanent code that can be checked on this site.
Official Japanese Soroban Standard
Immutable QR Verification
3
programme phases
3
examination languages
1
affiliated centre
100%
of certificates verifiable online
What the board does
Four responsibilities, and the certificate rests on all four.
02
Examination and grading
The board defines the paper, the time limits and the pass mark. A centre teaches; the board examines.
03
Certification and verification
Every certificate is issued against a permanent code. Anyone holding the paper can confirm it on this site in seconds.
04
Instructor training
Instructors are trained and assessed before they may present students for examination.
Verify a certificate
Scan the QR code on the certificate, or type the code by hand.
Verify a certificateNews
Announcements from the board.
Official Instant Online Verification for All GJSDB Certificates
Every issued certificate features a permanent encrypted QR token linking directly to the immutable verification ledger.
2026 Global Soroban Examination & Dan/Kyu Standards Released
GJSDB publishes standardized assessment rubrics, examination time-windows, and grading thresholds for all affiliated centers.
The board
The people responsible for the standard and the examination.
Master Kenji Takahashi
Chairman of International Technical Standards
Dr. Soran Ahmad
Regional Director for Middle East & Europe
Prof. Hiroshi Tanaka
Senior Academic & Pedagogical Advisor