The requirement would apply to students who graduate in 2030 and was built and accepted by the state Board of Education in March after Gov. Gavin Newsom vetoed a comparable measure last year until it was "inclusive of all communities."
Throughout the bill signing on Friday, Newsom announced that students "must understand our nation's full history if we expect them to one day build a more just society."
"Ethnic studies courses enable students to learn their own stories — and those of their classmates."
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The course will concentrate on the past and presents struggles of marginalized societies in America, including black, Asian, Latino, Jewish, Middle Eastern, Native and Indigenous Americans, women, and different societies who face bigotry, the Los Angeles Times reports
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The bill was authored by State Assemblyman Jose Medina with the aid of an advisory committee made up of teachers and educators.
Medina called the new requirement "long overdue" and simply "one step in the long struggle for equal education for all students."
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The bill, which was first proposed in 2016, drew stark criticism as opponents insisted it was filled with extreme ideology and obscure jargon, and bias against capitalism.
The version that Newsom vetoed last year likewise drew backlash from the members of the California Legislative Jewish Caucus, which announced the bill failed to correctly address anti-Semitism while providing positive representation for the boycott movement against Israel.
"There were 14 forms of bigotry and racism in the glossary," announced Assemblyman Jesse Gabriel (D-Encino), who described the exclusion of anti-Semitism as glaring, obvious, and offensive.
Anti-Semitism is now noted more prominently in the curriculum as a form of bigotry.
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It additionally now includes the experiences of Armenian and Sikh communities in the US, all while toning down "anti-capitalist sentiments."
Williamson Evers, a former US assistant secretary of Education, went on to speak out against the curriculum, stating it "is still full of left-wing ideological propaganda and indoctrination."
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"It still force-feeds our children the socialist dogma that capitalism is oppression."
Many proponents of the bill announced the new version is too diluted from the initial version and fear that two new changes could be a recipe for a crisis.
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The new bill advises that school districts bypass using anything that was removed from the original draft and requires all materials to be provided for public review, indicating it must be reviewed in a public hearing before being approved at a later meeting.
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