An uncalibrated rubric is a list of words. A calibrated rubric is an instrument. The difference is that on a calibrated rubric, a score of 3 means the same thing on Tuesday in Fort Polk that it means on Friday in Camp Pendleton.
OCTAAR rubrics are published, versioned, and owned. Every score traces back to a rubric definition that exists in the platform, has an owner, has a version history, and lives under change control. When the rubric changes, historical scores remain attached to the version that produced them.