International Federation of Fly Fishers
Is an international non-profit organization dedicated to the betterment of the sport of fly fishing through Conservation, Restoration and Education. The International Federation of Fly Fishers and its Councils are the only organized advocate for fly fishers on a regional, national and international level.
The test is standardized and international. Once you are ready for your test you are tested by two master casters. The test setup is here
If you do not prepare meticulously and do not seek the mentoring of a master caster it is about even chance that you will fail.
When you have passed the test you have earned the right to be called CCI i.e. Certified Casting Instructor.