Mitigating the impact of rising school facility temperatures resulting from climate change.

HB 1031 requires Washington's superintendent of public instruction to develop indoor temperature standards for public schools by forming an advisory committee with health, environmental, school operations, and parent representatives by September 2025. The bill updates existing law to explicitly include "excessive heat" (defined using National Weather Service guidance) as a valid reason for school closures due to unsafe conditions, replacing vague prior language. It mandates the committee to balance temperature control with energy standards and report recommendations by January 2026, followed by cost estimates by July 2026. This directly affects all public school districts, teachers, and students in Washington by establishing a formal process to address climate-driven heat risks in school facilities.