IT brightens up the school day, and it keeps everyone guessing.
The Cumann na mBunscol 'Follow The Dubs' campaign is up and sprinting once more.
Teachers will be holding 'Guess The Score' competitions before the games. Allianz have kindly sponsored the prizes.
The GAA Museum are again providing the Etihad Skyline Tour for the winner of the league scrapbook competition.
The Allianz Primary Whistlers are refereeing all the half-time games. There will be the chance to be photographed with the Dublin captains.
The 'Follow The Dubs' posters arrived in the schools. They feature Dublin hurler Danny Sutcliffe and footballer Paul Flynn, two role-models who can inspire the kids to dream.
Every classroom in Dublin will be hoping that Flynner collects his fifth successive All-Star this year. Meanwhile, Cumann na mBunscol's Jerry Grogan reports that record numbers have signed up for the Dublin Primary hurling and camogie leagues.