The idea of exposing those unfamiliar to the traditions of folk singing is valuable. Some can apply these techniques of singing to their interpretations. Many who attempt this process can possibly hurt their voices by straining or belting.

Examinations begins to sound like the testing system in education. Personal thought is put on hold. Exams for folk singing are not a true indicator as to the musical value of a unique interpretation to a song. Copying trad singing styles may have some value in the understanding of vocal nuances and ornamentation but stressing a uniformity and conformity to someone's idea of what is "authentic" appears to be arbitrary and open to question.

What is the scale to be used and who gets to apply it?

Someone in one part of the village might say that the folks in the other part of the village are not "authentic" and don't get it.

Ultimately, when an audience hears a performer, they are not so interested in the standards but whether they are moved by the artist.

Comhaltas does a great service in promoting Irish music. It may possibly do some harm by discouraging creative innovation.
(Tommy Peoples?) (Riverdance?) (Bill Whelan?)(Davy Spillane?)
(Andy Irvine?) etc.

If exams encourage such as in fiddle contests, than they may have use but should not be applied rigidly. If they motivate musical people to examine the traditional heritage of Irish or any other music, then they may have some use.

Frank