Geelong parents are being urged to know more about the danger of social media, with police worried about the rising issues of cyber bullying.

Leading Senior Constable ROBBIE NOGGLER says they're holding a seminar on August 21 at St Joseph’s College called “Who are my kids talking to on Facebook”.

He says young people need to know what can get them into trouble online and the seriousness of online bullying, while parents need to know what’s going on in their own homes.

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Parents wanting to go to the seminar can call the school on 5226 8100.