Practitioner Notes
One short read every Wednesday.
From the principals, researchers, and product people writing here. Built for instructional coaches and school leaders — not marketing, not pitches, just the writing.
A recent issue
Issue 47 · May 6, 2026
What separates a calibrated department from a confident one.
This weekA short essay on inter-rater reliability and why your highest-agreement evaluators may not be your best ones.
One playbookA 12-minute calibration warm-up your team can run before observation week.
From the fieldA principal in Tucson on what changed when she stopped scoring during the lesson.
HCMRPP
Written by Hannah, Marcus, Priya and the team.4,200+ educators read it last week.