TORONTO — A timeline of events in the multi-year political battle over Ontario's sex education curriculum:
September 2015: The Liberal government implements a "modernized" new sex-education curriculum. Social conservatives object to the inclusion of concepts such as gender identity, sexual orientation, and anal and oral sex.
May 8, 2018: The day before the official start of a provincial election campaign, Progressive Conservative Leader Doug Ford vows to scrap and replace the Liberals' sex-ed curriculum, accusing the party of turning schools into "social laboratories."
July 11, 2018: Ford, whose Tories won the election, announces his government is repealing the Liberal sex-ed curriculum and replacing it with a temporary plan while consultations are conducted on what the new document should look like.
Aug. 22, 2018: The government announces a public consultation effort, opening a website and holding telephone town halls where people can offer feedback on the new curriculum.
Sept. 21, 2018: Hundreds of students across the province walk out of class to protest the repeal of the 2015 curriculum.
Dec. 31, 2018: The government concludes its public consultations.
Feb. 28, 2019: An Ontario court dismisses a legal challenge brought by a civil liberties group and major teacher's union, which said the government was discriminating against certain children by scrapping the 2015 curriculum.
March 16, 2019: The government says its new sex-ed curriculum will teach gender identity and consent and will also include teachings on abstinence and lessons on cannabis.
Aug. 21, 2019: The Tories reveal the new curriculum, largely maintaining what was in the Liberal document. Lessons on sexual orientation and gender identity remain mandatory, though at different times than those under the Liberal plan. Reference to masturbation, anal sex, consent and cyberbullying also remain in the curriculum.