The College Board said Thursday it "resolutely" disagrees with any notion that enslavement was beneficial for African Americans -- a statement coming after some people compared the contents of its Advanced Placement course on African American Studies with Florida's recently approved Black history curriculum.

After a Southern California school district rejected a state-endorsed social studies curriculum that includes material on gay rights, top state officials are vowing to buy a textbook in question and distribute it to students before the new school year.

There will be lessons on health and wellbeing, relationships and sexuality and "into adulthood".