Please contact us at firstname.lastname@example.org should you wish to take any test in 2023.
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.