Frequency, not severity.
The score you just saw was the test. This is what the score is teaching.
You scored 0% with zero divergent errors. Here is what that calibration discipline actually is.
The frequency discipline, a reinforcement
The most common calibration error in the vestibular domain is frequency inflation from salience. A single dramatic incident reads as high-frequency because of its emotional weight. A consistent, low-drama pattern reads as low-frequency because it is unremarkable. Rate the count within the observation window. Not what alarmed you. The count.
What got rewarded
Frequency
Counts within the observation window. The unremarkable, repeated pattern.
What got penalized
Severity inflation
The single dramatic incident rated up because of its emotional weight.
Where adjacency lives
Defensible, not optimal
You posted 0 adjacent ratings, readings the framework accepts but a calibrated observer would tighten.
What you carry forward
The calibration you just demonstrated is the entire mechanism by which observation becomes useful to a team. You produced zero divergent ratings, which is the bar for certification, and the bar for a meeting where the data drives the decision. The next step translates that discipline into the academic outcome it produces.