Q: So, you just moved to South Dakota from Idaho. You had a license there. Can you drive? 

(Expect a lot of trivia questions like this on your test.) 

A: Well, yes, at first. You're required to have a South Dakota driver license if you live in the state for more than 90 days, a.k.a. become a resident.

How do they define "resident," though? Well, if you

• are registered to vote (doesn't affect minors),
• moved here for work (also likely doesn't affect minors),
• pay homeowners taxes (also, doesn't really affect minors),
• enroll your children in a public school (you're really striking out here, kid),
• or you get some other privilege that you wouldn't normally get if you lived out of state

...then you're a resident.