The 30-year-old wants to give her children every opportunity to see her dad perform while they're young.
Luckily, Kai's private school is said to have agreed for the six-year-old to head to France, so long as he completed homework tasks while he was abroad.
"She requested permission from the head and it was granted – with the provison that Kai was set some work during his time watching his dad," a source told The Mirror.
Kai has previously demonstrated his love for football during many father-son outings.
The six-year-old even broke down in tears while watching his dad lose to Uruguay in the 2014 World Cup.
Speaking about why she took her two children to the World Cup in 2014, Rooney told Hello! Online: "I would not like my kids to grow up and say, ‘Mum why didn’t you take me to watch dad in the World Cup?’ That was my thought throughout.
“Even though they’ve had that experience and they probably won’t remember it, at least they’ve got the photographs and hopefully they’ll get to go to the next one.”
It is not illegal for parents to take children in private schools out during term time. The ruling around parents of children educated in state schools, however, is a bit more complicated.
Following a government crackdown on term-time absences in 2013, parents who took children out of state school without permission were told they would be issued with a £60 fine per child.
If that fine was not paid within 21 days it rises to £120.
However, a recent High Court ruling decided a father did not have to pay a £120 fine for taking his daughter out of school for a trip to Florida during term time, because she had still attended school "regularly".