Sentinel

Built for Public Health Communication · Plain-language health and claim checking

An early-signal board for public health — catch anomalies in everyday indicators before they're confirmed outbreaks.

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← Signal board

Community · District attendance aggregate

School absenteeism

Excess K-12 absences above the seasonal expected level.

Watch · z +2.28

210

baseline (absences/day)

243

current (absences/day)

+2.28

deviation (z)

21-day history → today

Jun 6Jun 16Jun 26

range 0–243

The series runs flat near baseline, then ends on today's count — the point being scored. History mean ≈ 214, close to the stored baseline of 210.

How today scores

z = (current − baseline) / √baseline
  = (243 − 210) / √210 (14.5)
  = 2.28 → ≥ 2 watch

Run for Jun 26, 2026. This is an early signal to investigate — not a confirmed outbreak. Aggregate counts only; no individual-level data exists in this indicator. Adjust the value back on the signal board to watch the level respond.

Showcase demo for the Born Between 2 Generals summit. Showcase · best home: Nonprofit / public-good. Seeded with realistic sample data; runs payment-dark (no billing). Not a production system.