Welcome to the
International Standardized Testing Organization

ISTO provides knowledge-based benchmark test on ISO management system standards with useful data analytics

Elevate your business to the next level

Increase customer satisfaction with consistent service levels   

Equip your staff with a globally-regonized benchmark of excellence

Identify potential weaknesses in your staff's understanding of ISO standards

Streamline your employee selection process for greater ease and efficiency

Three outcomes from an ISTO Test

Certificate of Achievement

Qualification: a certificate of achievement upon passing  certificates candidate's understanding of the respective standard. 

See a sample of the certificate here.

Analytics Report

Analysis: an analytics report which measures a candidate's level of understanding in the eight (8) A C C U R A T E domains

See a sample of the analytics report here.


Star Diagram Explanation: ranks a candidate's performance against the candidate population

Learn more about how the star diagram works here.

Why choose ISTO Test 

For Employers

  • Upskill your employees
  • Ensure competency of your auditors and staff 
  • Give results to training
  • Facilitate recruitment 
  • Strengthen process control
  • Reduce non value-adding processes and documentation

For Certification Bodies

  • Ensure auditor competence
  • Use ISTO certificate as evidence to meet accreditation requirement
  • Cost effective measure to ensure consistency of auditor competence

For Individuals

  • Propel your career 
  • Receive a globally recognised qualification
  • Stand out among your peers
  • Identify knowledge gaps with our exclusive analytics report

Testimonials from Candidates

Taking the ISTO Test of Understanding was a wonderful exercise, requiring the analysis and interpretation of the standards in a natural and professional way. The cases presented varied from everyday routine situations right up to very technical questions, which makes the exam as globally applicable as the standards themselves. 
Alicia Robles Gomez
ISO 9000 and Standardization Manager, TELMEX Telefonos de Mexico, Mexico
ISTO was a very good test to evaluate my understanding of ISO9000. While working as a consultant and a registrar auditor, I have seen many misunderstandings about ISO9000 by quality staff, consultants, and even registrar auditors... Understanding the standards is a most important factor, and ISTO is making a success by deploying that purpose in its TESTs.
Nobuharu Hiyoshi
Independent Consultant / Sub-contracted Auditor, Tokyo, Japan
Very valuable for consultants in supporting and demonstrating their understanding of the important aspects of the changes.
David Underwood
Alan A Griffin & Associates, UK
The ISTO Test of Understanding is a significant first step towards identifying people who can help managers apply ISO 9000 in ways which create powerful management systems.
Jim Wade
The Business Improvement Network, UK
I found the ISTO TEST to be an excellent diagnostic tool to measure my level of understanding of the standards.
Jose Rico Alonso
CONOCER; National Council for the Standardization and Certification of Competence of the Workforce, Mexico

ISTO Tests are conducted online with in-person invigilation at the location of our Authorized Test Centre Partners and at the offices of our Strategic Partners

Your organization can organize ISTO tests for your staff at the convenience of your own office.

In the near term, we will offer ISTO test remotely with lockdown browser and human invigilation.

Ready to propel your company?

Make the next move with ISTO.
Try out the free trial test.