The following links are provided for your convenience, and for further reading/ general knowledge. Don't forget to bookmark the ISTO site first, so you can get back to us easily!

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.