The group, made up of 10 year olds to teenagers, explained: "We spend lots of our time in school but all we think about is dance, we've been together 3 years.
"We dance all the time and it's really tiring but we love it but it doesn't really matter."
The group, from Wales, added: "We miss parties, birthdays, we miss loads, but we don’t care because he love dance so much, nothing's going to stop us. We're just going to do our best and represent Wales the best we can."
They performed for the panel at auditions in Cardiff, singing to a medley of hits.
“The challenge for a dance act is to be original and different and come out here and blow the roof off with as much energy as possible and you did it," David Walliams told them.
Simon added: “You’re like the St. Trinian’s of dance and I like that idea and I think that you could play on that a bit more, so you’ve got a little bit more personality in terms of the image but I thought the choreography was smart and it was tight and fun. You were really good.”
Alesha raved: “The guys are right, you may be little but you mean business. I love the uniforms, the choreography. Good job, well done.”
Watch [tag]Nu Sxool[/tag] on Britain's Got Talent 2012 below...