Year 9 boys rugby team were declared champions of the Sky Try Rugby League Festival, hosted by Hull KR after beating six other local teams.
The new competition was held by Hull Kingston Rovers in association with Sky Try RL, a Sky Sports initiative to encourage interest in rugby league amongst children.
Six other local schools brought teams to the event - Trinity House, Withernsea, South Holderness, St Marys, Sirius North, and Longcroft.
Malet Lambert played and won all games, without even conceding a try. They scored 28 tries in total.
Coach and PE teacher, Mr Robinson, said,"It's an astounding achievement, they played superbly today.
"They really are a force to be reckoned with after a variety of local and national accolades over the past two and a half years."