FULBRIDGE School won the Peterborough RUFC Schools Challenge Tag Tournament played at the Midlands One club's Fengate ground.
Eight other schools - Beeches, Matley, Heritage Park, Orton St John's, William Law, Melbourne, Werrington Primary and Parnwell - took part in the tournament and were divided in Peterborough North and Peterborough South groups.
Fulbridge won the North section and defeated South winners Orton St John's in the final. Both sides were presented with a trophy but Fulbridge collected a further prize, presented by Councillor Patricia Nash, the Mayor of Peterborough, as overall winners.
Peterborough, who took over the sponsorship and organising of the event this season, donated a kit bag and two Tag kits to each participating school.
Peterborough hope that the continued success of the competition, for youngsters aged between nine and eleven, will allow the tournament to become an annual event and for the number of participating schools to increase.
"The schools organisers, Paul Workman and Tom Erskine, put a lot of preparatory work into the event and they were super with all the players," said East Midlands' president Derek Watkins.
"The tournament brought together all creeds with many nationalities being represented throughout the teams.
"I was very impressed with the team-work, the skills on display and the manners of the players.
"The Mayor of Peterborough also said how much she enjoyed watching the very high standard of rugby and urged all the players to keep playing rugby in the years ahead."
Referees for the tournament were provided by the Peterborough Lions and Westwood clubs.