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Coronado Unified lowers heat-index threshold, sets prior-evening notice for heat-day releases
Summary
The board approved an updated administrative regulation to declare heat-day releases earlier and with a lower heat-index threshold (from 90 to 87). The change sets notifications at 7 p.m. the evening before and uses heat index projections inclusive of weekend days; trustees and speakers urged contingency planning for forecast sources.
The Coronado Unified School District governing board voted unanimously to adopt an updated administrative regulation (AR 3516.51) that sets new rules for declaring heat-day releases.
What the regulation does: The regulation lowers the district's heat-index threshold for declaring an early release or abbreviated day from 90 to 87, instructs staff to capture and publish a forecast-based heat-index determination at 7 p.m. the evening before a potential heat day, and clarifies that consecutive hot days inclusive of weekends may trigger heat-day decisions. Superintendent Mueller said the regulation adds clarity and removes ambiguity about which weather site or metric the district should use.
Why it matters: Lowering the…
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