Schema for categories of awards or scores

I am adding microdata to a dance studio's website and one of the pages
lists results for the dance teams at various dance competitions. In
addition to a numeric score, teams receive an award from a hierarchy class
(ie silver, gold, or platinum) which is the most relevant description of
the score.

http://duluthdancecenter.com/news.shtml#2015results

It would be helpful to have way to define "platinum" or "gold" as a score
or award to avoid the possibility a search engine will include the dance
studio page in searches looking for the literal use of the words. This is
similar to the question raised in "other types of recipes".

http://lists.w3.org/Archives/Public/public-schemaorg/2015Jul/0017.html

One possibility would be to have "Award" or "Score" be a more specific type
of https://schema.org/thing same as https://schema.org/Rating. Rating would
seem to work for this purpose if I define silver, gold, or platinum a value
of 1, 3, or 5 out of 5; however, the rating schema seems to be specific to
the rating of a tangible item rather than the results of a
https://schema.org/SportsEvent.

Jim Bjork