New Jersey is the first state in the U.S. To mandate climate change education across all grade levels, including kindergarten through 12th grade, integrated into various subjects in public schools.
New Jersey now mandates climate education in ALL public schools. Kindergarten through 12th grade.

FactVerify
Source: factverify.com
What the Evidence Shows
The claim states that New Jersey now mandates climate education in all public schools from kindergarten through 12th grade. Multiple sources confirm this is accurate. According to NPR ( and), New Jersey became the first state to require climate change education across all grade levels and in most subjects, with standards rolled out recently.
WBUR also confirms that New Jersey mandates all public schools starting in kindergarten to incorporate lessons about climate change into their curriculum. The Hechinger Report highlights that climate change education is integrated into almost all subjects, even physical education, demonstrating the comprehensive nature of the mandate. There is no indication that this mandate excludes any public school grade levels or subjects, supporting the claim's assertion of coverage from kindergarten through 12th grade.
Therefore, the claim is well-supported by multiple reputable news sources and reflects current educational policy in New Jersey.