About the NCCA from their website
The National Commission for Certifying Agencies (NCCA) was created in 1987 by National Organization for Competency Assurance (NOCA) to help ensure the health, welfare, and safety of the public through the accreditation of a variety of certification programs/organizations that assess professional competence.
The standards were first issued in the late 1970’s and have been refined over time. NCCA uses a peer review process to: establish accreditation standards; evaluate compliance with the standards; recognize organizations/programs which demonstrate compliance; and serve as a resource on quality certification. Certification organizations that submit their programs for accreditation are evaluated based on the process and products, not the content, and are therefore applicable to all professions and industries.
NCCA accredited programs certify individuals in a wide range of professions and occupations including nurses, automotive professionals, respiratory therapists, counselors, emergency technicians, crane operators and more. To date, NCCA has accredited over 190 programs representing 78 organizations.
About the ISO from their website
ISO (International Organization for Standardization) is the world’s largest developer and publisher of International Standards.
ISO is a network of the national standards institutes of 157 countries, one member per country, with a Central Secretariat in Geneva, Switzerland, that coordinates the system.
ISO is a non-governmental organization that forms a bridge between the public and private sectors. On the one hand, many of its member institutes are part of the governmental structure of their countries, or are mandated by their government. On the other hand, other members have their roots uniquely in the private sector, having been set up by national partnerships of industry associations.
Therefore, ISO enables a consensus to be reached on solutions that meet both the requirements of business and the broader needs of society.
The ISO agrees upon “specifications and criteria to be applied consistently” when a large majority of international industry-specific groups conform to a certain idea. (more here)
An ISO standard is a documented agreement containing technical specifications or other precise criteria to be used consistently as rules, guidelines, or definitions of characteristics to ensure that materials, products, processes and services are fit for their purpose. It is a living agreement that can have a profound influence on things that deserve to be taken seriously – such as the safety, reliability and efficiency of machinery and tools, means of transport, toys, medical devices, and so on.