The report series, News Literacy and News Publishers, offers lots more ways to give children and teenagers a meaningful, memorable journalistic experience, especially in #3 Create ways to try ournalism.
Also, "Digital make-the-news platforms and contests" has details about nationwide initiatives from Belgium, Denmark, France, The Netherlands, Poland, the United Kingdom and South Africa. You can downoad the dossier HERE. (WAN-IFRA asks for your contact details to be able to send updates about both new hresources and common actions.)