The Finley High School student competed in the state titles from Tuesday to Thursday, playing as part of the grand final winning Riverina Murray side.
Murray took on the Combined Catholic Colleges Northern side in the decider, scoring a six point win in a tight encounter.
Shadeau competed against the state’s best Under 15s footballers, with his efforts seeing him earn a spot in the NSW team that will compete at the School Sport Australia Championships in Tasmania from July 27 to August 3.
The Riverina Murray side went through the NSW competition undefeated, managing dominant wins on Tuesday to finish on top of Pool C.
Day one saw the Murray side down Riverina South West by 38 points before knocking off Sydney by 37 points later that day.
Day two saw the side come up against the Combined Independent Schools team twice, defeating them by 14 points on both occasions.
The first win saw Riverina Murray finish as the first seed of the competition with the second victory booking them a spot in the grand final.
Shadeau plays for the Finley Cats thirds in the Murray League, following up his state representative performance with six goals to help his side to a 49 point win against Barooga on Saturday.
The 15 year-old is his side’s leading goalkicker for the 2019 season as a bottom-age player, with 22 goals from eight games.
Shadeau and his Finley thirds side will likely play finals this year, sitting fifth on the ladder with an impressive 6-3 record.
The Cats will have a tough road test this week when they travel to take on the 5-4 Tongala side.
A win could see Finley climb into the top four, while a loss could see them drop down as far as ninth on the ladder.
