An updated list of Worldwide partners will be available shortly.

Please contact us at info@isto.ch should you wish to take any test in 2016.

Disclaimer: The International Standardized Testing Organization (ISTO) is a commercially - run organization. It fully supports and embraces the international standards published by standards bodies. The International Organization for Standardization (ISO) is a world-wide federation of National standards bodies based in Geneva, Switzerland. Being independent and impartial, ISTO has no formal links with any standard bodies.