High school students are increasingly visiting online gambling sites. 

An investigation by Newstalk ZB has found that sports betting and online casino games are increasingly popular with teenagers, who even access the sites during the school day. 

Life Education Trust Chief Executive John O'Connell told Kate Hawkesby that phones among young people have caused a number of challenges. 

He says schools should be aware that students with mobile phones have gambling in their pocket. 

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