The boys say the news is amazing and unexpected.
They have been ultimate frisbee training at the school for three years. But they're still learning, they say.
"We've played all the other sports like rugby and football,'' Ayrton says, ''but frisbee is probably the hardest."
They all talk of the skill required to perfect four main throws. They are the backhand, forehand, the overhead throw (or the hammer) and the scoober.
"It's about agility, fitness and speed," Peter says. "When you release the disc, it will move in a different way each time you throw it. A different throw might be required for a different position on the field.
"It's a game that anyone can play, but you can play it for years and still not get that good at it. There's a lot of physics involved that you just might not ever get your head around."
New Zealand Ultimate executive office Iain Stewart likens the sport to a cross between touch rugby and netball.
The basic skills of throwing, running and catching are quite easy to pick up and to get a game going, he says.
"However, the control of the disc required to play at the top level requires a lot of practice. Players need to be able to control the spin, angle, speed and distance of each throw to ensure a completed pass to their teammate. Top players can make accurate passes over 40m."
The sport is self-refereed so there is a big emphasis on honesty and in the spirit of the game.
The Katikati College ultimate frisbee team won the New Zealand Secondary Schools Open Frisbee championships in April — and knocked over top teams such as then-reigning champions Auckland Grammar School (who have won the title six times) and one-time title- holders Hutt Valley High School.
Sean, Daniel, Ayrton and Luke are training with the under-20 ultimate training squad under coach Warren Buckingham, and they've been playing with Mount Ultimate.
The four are now fundraising. They need to raise $8000 each to get to Poland. Katikati College is holding various fundraising events towards their trip.