BBC News School Report's 10th annual News Day is under way, with about 30,000 students in schools across the UK making and broadcasting the news.
School Reporters are striving to post stories to their websites by a 14:00 GMT deadline, when the BBC will link to those sites via its interactive map.
Pupils are also going on air and online on the BBC throughout the day, from the Today programme to BBC News at Six.
Some will even guest edit part of the News Channel and CBBC's Newsround.
There will also be behind-the-scenes visits for School Reporters to BBC buildings, including visiting the Chris Evans Breakfast Show in London, taking part in a computer coding workshop in Salford using the new BBC Micro:bit and going behind the scenes of the John Beattie programme in Glasgow.
School Reporters will be reporting on BBC outlets throughout the day on a range of stories from a scientific study into sleep deprivation, to the world of young YouTubers and from mindfulness meditation to going without social media for a week.
There will be seven special radio reports on BBC World Service from young people around the world in Delhi, Moscow, Soweto, Hamburg, Rio, Mexico City and Jerusalem.
This year marks 10 years of BBC School Report, with more than 400,000 School Reporters having taken part over the project's first nine years.
BBC presenter Huw Edwards, who has been involved in the project from the start, said: "I look forward to this day every year.
"I've seen first-hand how much can be learnt from work-shops in schools when we give students real journalistic deadlines and standards to adhere to.
To mark the project's first decade, the project has launched a YouTube channel, which will feature highlights of stories from students across the UK, plus some from around the world.
The School Report Website and BBC Red Button service will be streaming programmes from BBC Wales, Asian Network, a pop-up radio station in Birmingham, a television show from Northern Ireland and television bulletins from New Broadcasting House, London.
James Harding, director of BBC News said: "Every year, School Report's News Day brings thousands of new young reporters to the BBC.
"We hope these young newshounds will discover a little about the nature of the BBC and its place in the wider world; in return we benefit from the wonderful range and energy of their interests."
The project's web team is running a Live Event page from 08:00 to 20:00 GMT, during which it will aim to mention as many of the more than 1,000 participating schools as possible. The site will also publish a host of audio-visual and text stories, as well as picture galleries.
What is School Report?
Set up in 2007, the project gives 11-16 year-old students in the UK the chance to make their own news reports for a real audience
Schools make reports for their own website which the BBC links to from an interactive map
The BBC works in partnership with schools to bring young people's voices to its mainstream news output
While reporting takes place all through the school year, the annual News Day in March provides a focus and a deadline for all schools taking part