Our mission
To hold one standard for Soroban mental-arithmetic training, wherever it is taught.
About the board
Global Japanese Soroban Development Board — The international authority establishing abacus curriculum benchmarks and verifiable credentials.
The GJSDB was established to preserve, advance, and standardize the authentic Japanese Soroban abacus discipline while integrating modern cognitive science.
We collaborate with accredited educational academies across the globe to uphold academic rigor, instructor excellence, and uncompromised certification integrity.
Our vision
A certificate that means the same thing in every country that issues it.