The HomeRoom National Show Choir Rankings are an attempt to do the impossible - quantify a subjective art form.

PHOTO: Ione Berken | Timber Creek and Keller Middle scored big wins in the final competition of the season. Plus, updated rankings!

A national championship, a state championship, and a rare Oklahoma contest are on tap for the final big show choir weekend of the season.

Plus Burbank extends dominance at John Burroughs and New York scores a win in Canada.

PHOTO: Derrick Knight | From caption splits in advanced to Los Alamitos sweeps in lower divisions, the final Western competition was cinema.

The California Big Three transitive circle is completed, America wins in Canada, and groups from Texas and Massachusetts take maiden wins.

PHOTO: Nathan Ensley | Across the country, several single-gender groups stood out above the rest of their competition.

PHOTO: Derrick Knight | From advanced to novice, everyone is trying to get one more great placement in at the end of the season.

John Burroughs, Rouse, Show Choir Canada, and Waltham are the featured events this week.

PHOTO: Derrick Knight | Fort Worth Southwest and Timber Creek headline a field that's an even mix between Dallas and Austin.