The original test is the ISDS sheepdog trial. It is still used today, where a dog and handler collect groups of livestock and move them quietly around a course. There are certain standard elements to this test depending on the level: national or international. For both levels, sheep must be gathered as calmly as possible without being distressed. For a national competition, normally held between England, Ireland, Scotland, and Wales, trials run over a 400-yard course. International courses use a 400-yard course for the qualifying trials, but on the third and final day, trials are held in a course of 800 yards. The international test involves a "double fetch", where the sheepdog must gather 10 sheep from 800 yards away, bring them on an angle to the center of the field, and then be sent back in another direction to gather another 10 sheep, also placed 800 yards from the handler. Five of those 20 sheep will have collars on, and at the end of a triangular drive, the sheep are gathered into a circular "shedding ring" and the 15 sheep without collars driven away as the five collared sheep are kept inside the ring and then penned. Sheepdogs must be directed through obstacles at varying distance from the handler, and then the dog must demonstrate the ability to do work close at hand by penning the sheep and sorting them out.