Ontario Premier Kathleen Wynne's visit to a Back to School Fair in Thorncliffe Park on Saturday was met with some vocal opposition over the province's new sex education curriculum.

About a hundred parents and children chanted and waved signs that included the slogan 'Parents say No to Sex-Ed curriculum.'

The new curriculum goes into effect when school begins on Tuesday.

"The major problem in the curriculum is that it is too early and not age appropriate," said Khalid Mahmood, a father of five.

The government has said that school council chairs at all 4,000 schools across the province were consulted. The protesters on Saturday said their concerns have not been heard.

The premier did not speak publicly.

Ontario's sex education curriculum, which was unveiled in February, had not been updated since 1998.

New topics include cyber-bullying and gender identity.

Parents have the right to withdraw their kids from all or part of the new curriculum if they're uncomfortable with its content.