California heat illness law for schools passed with 0 votes against, and requires nothing new yet

A heat illness law for California schools requires nothing new yet

California signed a heat illness law for schools this year, and reading its own text shows how little it requires today. Governor Gavin Newsom signed Assembly Bill 1653 on July 13, 2026, as Chapter 70, Statutes of 2026. The bill carries no urgency clause, the marker that would make a law take effect immediately, so under the standard rule for a California statute without one, it takes effect January 1, 2027, a date this site calculated from that rule rather than one the bill states outright. The law adds a new section to the Education Code, Section 51900.4. Reading that section directly, rather than summaries of it, shows it does not tell the State Board of Education to add anything. It tells a separate advisory panel, the Instructional Quality Commission, which recommends curriculum content to the board, to consider recommending heat illness content only the next time the state revises its Health Education Framework, the guidance document that sets what California schools teach about health. That framework was last updated May 6, 2019, a gap of 7 years this site counted against the bill signing date, and none of the 5 sources give a date for when it will next be revised.

This bill creates no mandates. It simply promotes awareness and prevention. Because sometimes the most powerful way to protect our students is by giving them the knowledge to protect themselves.

Assemblymember Tom Lackey, author of Assembly Bill 1653. Source 4.

A 13 year old push behind the bill, and how fast it moved

The law exists because a Sacramento student, Natalie Rubio, was in fourth grade in 2022 when her school cafeteria air conditioning failed during a heat wave. She asked Assemblymember Tom Lackey, the bill author, to write a law about heat illness in schools. Lackey introduced Assembly Bill 1653 on January 28, 2026. It reached the Assembly floor 110 days later, on May 18, 2026, and the Senate floor 148 days after introduction, on June 25, 2026. Newsom signed it 166 days after Lackey introduced it. Those day counts are a calculation this site made from the dates in the bill history record, not a total any source states outright.

I want schools to teach every student the signs and symptoms of heat illness and how to respond in a memorable way.

Natalie Rubio, the middle school student whose advocacy led to the bill. Source 4.

Every recorded vote came back unanimous

Every recorded vote on Assembly Bill 1653 came back unanimous. The Assembly Education Committee passed it 8 to 0. The Assembly Appropriations Committee passed it 14 to 0. The full Assembly passed it 74 to 0. The Senate Education Committee passed it 7 to 0. The full Senate passed it 36 to 0. Across all 5 recorded votes, 0 lawmakers voted against it.

Heat illness is already costing California schools time

The law arrives as heat illness is already measurable in California schools. Tracking California, a health surveillance tool run by the Public Health Institute, recorded 618 emergency room visits by children ages 5 to 17 for heat illness in 2024, about 30% more than the year before, according to CalMatters reporting of that count. California students lost more than 40,000 hours of instructional time to closures and disruptions from extreme heat in the 2025 2026 school year, according to data collected by UndauntedK12 and reported by CalMatters. Extreme heat caused 73% of weather related school closures that fall, per the same data. The bill itself names the signs of heat illness a future curriculum could teach, a red or flushed face, nausea, muscle cramps, headache, dizziness, fatigue or weakness, confusion, and heavy sweating or the lack of sweating.