Children 'should be taught about pornography and sexting'
Most people think schools should teach children about the impact of sexting and pornography, a charity says.
Plan International UK claims 75% of people think the impact of porn should be a compulsory part of the curriculum, while 7% oppose the move.
In its survey of 2,000 adults it said 71% of people wanted pupils to get lessons on sexting.
Education Secretary Justine Greening said she was looking at the issue, but a law change has not yet been proposed.
Plan International UK's chief executive, Tanya Barron, called for "children's education to reflect the 21st Century reality of their lives".
Currently, all secondary schools in England under local authority control have to teach sex education as part of the science curriculum but this is limited to the biological aspects of reproduction and does not cover relationships.
But a loophole means academies and free schools - which are controlled by central government rather than local authorities - do not have to follow the national curriculum and are not, therefore, obliged to teach the subject.
Sex education is also taught at most secondary schools in Scotland, Wales and Northern Ireland, where there are separate education guidelines.