Good. Why the hell would you want to teach kids in their most developmental years how to use a tool that by its very nature offloads their cognitive functions?
It's the same reason you don't give kids the option to ever use calculators in math class until at LEAST middle school, because if they just start with them they'll never learn the fundamentals and they'll just get used to offloading all the mental math to the calculator.
And not only that, they'll consider its response more reliable if they can see it cited sources... which are almost always Wikipedia.