Talented competitors from Healing School won the Grimsby and District Swimming Championship when the competition was hosted for the first time at the town's new swimming pool.
For the squad of 80, the winning performance against four other North East Lincolnshire schools was the culmination of two months hard training.
The event was also a personal triumph for their coach Helen Stead, deputy head of PE, as it had been Healing's turn to organise the event at the Cromwell Road venue.
"I was overwhelmed with our pupils' commitment and dedication," she said. "It all came down to the last two relay races and we ended up winning by only 17 points.
"The team gave everything. There was real pride in the whole squad."
She gave a special mention to boys' Year 10/11 captain Will Dixon, girls' Year 10/11 captain Ellie Buxton and overall captain Zach Clarke.
The best team performance came from the Year 8 boys who only dropped one point.
"This was exceptional and we were also lucky to have Will, Ellie and Zac setting the example for others to follow.
"It was a fantastic team effort and there were lots of parents who really got behind the children and helped us get across the winning line.
"I'd like to thank the school which has really embraced swimming. We have received terrific support from other teachers.
"The win took two months of solid preparation, and I've been organising it since September.
"I'd also like to thank the venue and the staff there. It was fantastic and they could not have done any more for us.
"For many of the children, it was the first time they had been to the pool and I know they were really impressed with the facilities.
"I'd also like to thank the two local clubs GAST – in particular Mark Crump as he worked for hours doing the scoreboard - and CADs for their support. Everybody came together in a real team effort.
Principal Mark Knapton felt proud of the whole squad.
"I'd like to congratulate our pupils and the PE department," he said. "We are delighted to be district champions again.
"All the hours of training have paid off. It's always a highly competitive event with talented swimmers involved from across the district.
"Team Healing are a credit to the school."