AB 1939 (L. Rivas et al) This bill would require that science classes for grades 7-12 to include coursework on the causes and effects of climate change and methods to mitigate and adapt to climate change no later than the 2023–24 school year. Read author’s factsheet. Read The Climate Center’s Letter of Support. STATUS: Approved in the Assembly. Held in the Senate Education Committee beyond deadline for passage. Dead.