Middle and high school students interact via powerful social media platforms such as Facebook, Instagram, and Snapchat. Social media platforms are sometimes misused, resulting in cyberbullying and sexting that could adversely affect many in the school community. School counsellors, school psychologists, and educators are uniquely positioned to proactively address cyberbullying and sexting in schools with targeted educational and preventative programming. Attention to four facets is recommended: school climate initiatives, policy development and implementation, training in empathy and decision making in the context of online disinhibition, and challenges to use technology positively. Resources for cyberbullying and sexting prevention in Australia and the United States are highlighted.