California is to become the first state in America to use LGBT-inclusive textbooks within primary schools.
Former state senator Mark Leno has written a bill on the matter and reports claim it states "history and social sciences curriculum" must include lessons on "accomplishments of queer people and people with disabilities.”
Ten books have been approved by the California State Board of Education, all of which feature the history of LGBT Americans who made significant contributions.
These will be used for children from kindergarten until the eighth grade, which covers the ages of 5 to 15, according to The Independent.
Publishers who have books approved by the state board include National Geographic Learning, Pearson Scott Foresman and McGraw Hill.
However it also ruled against two textbooks which didn't meet the state’s 2011 Fair Education Act and did not feature history about LGBT people.
Publisher Houghton Mifflin Harcourt said the LGBT community has made important contributions to the history of America but did not alter its textbooks.
It said using the words "lesbian, gay, bisexual, transgender and queer are contemporary terms" which might not "map well on past lives and experiences."