The head of William Howard School has rejected claims from parents that hundreds of pupils were sent home, or put into isolation, because of their uniform.
Domenic Volpe says that 80 pupils were "spoken to" about their uniform on the first day of term, and 40 students the following day.
He says no pupils have been excluded, and "no students were sent home as a result of uniform policy".
Pupils at a Cumbrian school are hours into a marathon sing-a-thon.
The students at William Howard School in Brampton are joining up with schools around the world to mark the United Nations Day of Global Ceasefire and non-Violence.
During the winter months, the football team spent their nights and weekends training for the championship.
They said it was hard work, but was all made worthwhile when they lifted the title:
Doug Anderson is a P.E teacher at William Howard School, and he is responsible for coaching the under 12's team.
He said there success is down to their hard work and determination:
A group of schoolboys from Cumbria have been crowned national 5-a-side champions, after their team triumphed in the football finals at the weekend.
The under 12's team from William Howard School in Brampton, made history when they picked up the title at the competition in Derby.
No other teams from the school have been able to win the championship.
The boys were undersdogs going into the competition, but came out on top with a 1-0 win over their opponents.