Some of the pupils taking part in the world record attempt for the largest game of Tag Rugby at Luton Rugby Club, Bedfordshire.
The event was part of today's launch of the Festival of Rugby, marking 100 days until the start of the Rugby World Cup.
Nearly thirty schools from Bedfordshire and Northamptonshire were involved.
Read more about the Rugby World Cup at ITV Sport.
A schoolboy from Northamptonshire had the surprise of his life today when he was told in front of his entire school he had been chosen to be a Rugby World Cup mascot.
He wasn't told by just anyone - Northampton Saints and Welsh rugby star George North turned up to break the news to 10-year-old Rhys Hamber during the school's morning assembly.
Rugby-mad Rhys can now look forward to a once in a lifetime opportunity which will put him at the very heart of the biggest occasion in the rugby calendar.
Click below to watch a report by ITV News Anglia's Russell Hookey
From the look on his face you'd think 10-year-old Rhys was being hauled in front of the school to be told off. Instead he found out he been selected as a World Cup mascot.
Rhys Hamber was surprised during his school assembly by Northampton Saints and Welsh rugby star George North.
Rhys will be one of 96 young mascots at the Rugby World Cup taking place in England and Wales in September and October.
Hundreds of people will arrive in Milton Keynes today hoping to become an official volunteer for Rugby World Cup 2015.
More than 20,000 people applied for the try outs which are being held across the country, but only 6,000 will be selected. The volunteers - known as The Pack - will welcome rugby fans to the match venues, which includes Stadium MK.
Tickets for next year's Rugby World Cup go on sale at 10am today - with three of the matches being played in Milton Keynes.
Up to one million tickets for all 48 matches will be put on general sale with over-subscribed games going to a ballot.
The matches coming to Stadium MK include France versus Canada and Samoa against Japan.
Fans are being warned not to buy tickets from illegal touts.
Rugby world cup winner Will Greenwood has been in Milton Keynes to launch the official countdown to the 2015 tournament.
The former England star says the home tournament - which will be live on ITV - will be a massive opportunity for the players.
MK Dons chairman Pete Winkelman says it's now become real that Stadium MK will host the Rugby World Cup.
The two year countdown to the Rugby World Cup is now underway. Stadium MK will host three games during the 2015 competition.
The chairman of the League One side said hosting Northampton Saints games at Stadium MK had been among the most exciting events at the venue.
The official countdown to the 2015 Rugby World Cup has started.
Rugby World Cup winner Will Greenwood was at a launch event at Snowzone in Milton Keynes to say World Cup rugby is just two years away from being staged in the town.
Stadium MK will host three games during the competition
More rugby on the ITV Sport website.