subtly_artistic
It's not actually common in my world for little kids to attack each other with magic, but maybe that's because by the time most people learn any spells they've already been introduced to the weapons culture and that's their first thing to try if they're that mad.
I think they'd - fail to realize that they could harm another person. The older generation knows, but the younger ones have grown up in Valinor, where it's all but impossible to hurt yourself and fixed immediately - you could tell them, but I think some people would just not think of badly hurting another as an outcome that was even possible, while they're still young and have no exposure to the idea to teach them better.