[4][5] It has over 1,500 institutional members consisting of over 800 schools and 600 colleges/universities, located in 121 countries.
[5] Many international schools in countries around the world are paying members.
[6] The services of CIS include international educational accreditation.
Once CIS Accredited, the school then pays €4,350 annually.
[9] The annual membership fee is based on the number of students the school has enrolled.