Three-quarters of parents (75%) don’t think social networking sites do a good job of protecting children’s online privacy, according to a poll conducted by Zogby on behalf of Common Sense Media.

The majority (92%) of parents are concerned that children share too much information online and 85 percent say they are more concerned about online privacy than they were five years ago.

The poll also found that 91 percent of parents think search engines and social networking sites should not be able to share kids’ physical location with other companies until parents give permission.

Other highlights include:

*79 percent of teens think their friends share too much personal information online.

*70 percent of parents think schools should educate students about online privacy.

*75 percent of teens think adults are a better source than their friends for advice on staying safe online.

“The poll results present a clear divide between the industry’s view of privacy and the opinion of parents and kids,” said James Steyer, CEO and founder of Common Sense Media.

“We are all responsible for addressing this enormous challenge: The industry must openly acknowledge the problem. Parents and kids have to educate themselves about protecting their information. Schools should teach students and parents about privacy protection. And policymakers must update privacy policies for the 21st century.”