HALF of school children have admitted to seeing sexual, violent and other adult material on social media sites, apps and games, a new survey shows.

A study by the National Society for the Prevention of Cruelty to Children (NSPCC) also found 78 per cent of pupils had joined social media sites before reaching the minimum age of 13.

The findings are revealed in the latest update of the Net Aware guide, produced by the NSPCC in partnership with telecommunications company O2.

NSPCC and O2 asked 1,725 children and young people and over 500 parents to review and rate the most popular social networking sites and apps.

The top five sites where young people reported seeing inappropriate content were Sickipedia, Chatroulette, Omegle, Ask.fm and Yik Yak.

Despite repeated calls for improvements in online safety, the Net Aware results have highlighted the scale with which children and young people are being exposed to inappropriate content on social media sites.

The research revealed young people were more likely than parents to report seeing harmful content on three quarters of the sites they looked at.

And while young people rated Chatroulette, Omegle and Tumblr as high risk for sexual content, parents rated them as low risk - highlighting the need for parents to find out more about these sites so they can have informed conversations with their children about staying safe online.

Peter Wanless, NSPCC chief executive, said: “Our Net Aware research has shown that children are far more likely than parents to report seeing sexual, violent, or other adult content on social media. It’s vital that parents sit down together with their children regularly to talk about which social media sites they are using, and how to get help if they need it.

“More than sixty per cent of young people we asked said social media platforms need to do more to keep children safe. These companies need to take more responsibility for keeping children safe online. We think there should be minimum standards in place and a new regulator may be required if industry can not regulate itself.

“Thankfully, it’s not all bad news. Around half of the sites in Net Aware have made improvements to their privacy settings and reporting functions; a trend I hope will continue. The NSPCC will continue to campaign for a safer internet, provide support for children through ChildLine, and advise parents through our partnership with O2.”

Nina Bibby, Marketing and Consumer Director at O2, said “As a parent it can be difficult to keep up with the many different websites, apps and games our tech-savvy children know so well. It’s vital that parents actively participate in their children’s digital life to help them stay safe online. At O2 we believe we have an important role to play in giving both parents and children the necessary digital skills to safely make the most of technology. That’s why the latest Net Aware guide and our partnership with the NSPCC are all about giving parents the support, advice and information they need to have the right kind of conversations about the online world.”