When do you think the kids started taking over Orr when do you think they'd have to start actively defending themselves from evil?

Like how old do you think Wyatt and Chris or the cousins got when they started taking over the family business? Or. Like when did they start having to defend themselves. We're they in middle or high-school when they started getting attacked. We're warlocks and demons attacking during the school day or infiltrating as students ot faculty? Or was it in college or after?