In the US, IQ tests are (in some states) used in public schools during part of a process to identify students who have unique potential that may be realized if

In the US, IQ tests are (in some states) used in public schools during part of a process to identify students who have unique potential that may be realized if special consideration, privileges, and opportunities are given to them. So called "gifted" programs. For example, I used one of these programs to spend half my highschool career playing Doom on school computers, and spend the other half of my highschool career taking courses at the local branch of the state university.... Yeah, not a perfect system. Using IQ tests during hiring is legally risky in the US because it puts you at a high risk of discrimination lawsuits. Subsequently, where you see them in the US, they are masquerading as something else (think "puzzle"/"outside the box thinking" interview questions for programmers).