Parramatta Marist High School will make rugby league history on Tuesday.
The under-60kg side will play St Mary's Cathedral College at Erskineville Oval to celebrate 100 years to the day when the two teams played in the first tournament of schoolboy rugby league in 1914.
It was originally a primary school competition but only St Mary's Cathedral College, Parramatta Marist High and St James Forest Lodge — still a primary school — remain from the original nine teams that played a century ago.
Parramatta Marist High principal Brother Patrick Howlett said the day would be another significant milestone for the school.
"Parramatta Marist High has established a long and proud sporting, academic and cultural tradition since its establishment as a Catholic school in 1820 and, as a distinctly Marist school, since 1875," Brother Patrick said.
"As we approach our bicentennial year as a Catholic school, we are honoured to participate in such a historic event."
Parramatta Marist's sports master Tim Woodbine declared it would be a historic occasion for rugby league.
"We are very proud to share with the rugby league community our long sporting legacy here at Parramatta Marist," Mr Woodbine said.
Coach Jeff Phillips said the team had started the season strongly and been training hard and the players were looking forward to being part of this historic event.
"This game is more than just a football match, it celebrates our long history," he said.
All, including Parramatta Marist Old Boys, are welcome to watch the match. It kicks off at 12.15pm.