The THE program allows a member to participate at whichever level meets their needs as a purebred breeder. It is a cow-based program and the only requirement is that if any weight (i.e. birth weight) is reported, then it must be reported on all calves, not just those that are registered. All traits (birth, weaning or yearling) are not mandatory. It is the comparison of calves given the same opportunity to perform that generate EPDs which can then be compared across herds.