As education is a provincial concern, sex education varies across Canada. Ontario has a provincial curriculum created in 1998. Attempting to update it has proven controversial: a first reform was shelved in 2010 and a new curriculum introduced in 2015 by the Liberal government under Kathleen Wynne was reversed three years later by the Conservatives under Doug Ford, inviting parents to file complaints against teachers who won't comply with the change. Mandatory sex education was removed from the Quebec provincial curriculum in 2005, leaving it at the discretion of each teacher. With rates of syphilis and gonorrhea rising in the province since this change, several researchers and sex educators are criticizing the current policy, most notably Lisa Trimble and Stephanie Mitelman. It was brought back as a facultative subject in 2016–2017, then mandatory for the 2017–2018 school year.