St Catherine's Catholic College girls Aussie rules side won the Paul Kelly Cup at GIANTS Stadium in Sydney on Monday.
The highly-fancied college side from Singleton defeated last year's champions Lindsay Park Public School from the South Coast 19-13 in what was a tight match.
St Catherine's Catholic College coach Patrick Fitzgerald said the win was a reward for the dedication of the girls over the past few months.
"It's just a fantastic feeling to win, I feel so proud of each and every girl out there today," he said.
"They were all so excited come out and compete at GIANTS stadium, it was a big trip to the city and they were determined to give it everything they had and they certainly did.
"There's been a lot of hard work at lunchtimes to win this competition and each and every member of the team deserves this victory."
Dudley Public School competed in the boys competition but were not able to advance to the final.
Coach Jason Horadam said playing on the big stage was an experience the boys would never forget.
"It's been amazing for the boys to get this experience, to play at an elite AFL stadium here at GIANTS Stadium in the Paul Kelly Cup state finals," he said.
"There's been a huge amount of work put in by the boys, and there love for the game just keeps growing and growing with so many of them involved with local clubs like the Cardiff Hawks and Warner's Bay."