A higher score on a municipal employment test could hurt you. This is an old employment selection case that I hadn't heard about before:
A US man has been rejected in his bid to become a police officer for scoring too high on an intelligence test.
Robert Jordan, a 49-year-old college graduate, took an exam to join the New London police, in Connecticut, in 1996 and scored 33 points, the equivalent of an IQ of 125. But New London police interviewed only candidates who scored 20 to 27, on the theory that those who scored too high could get bored with police work and leave soon after undergoing costly training.
I don't know if a cut-off at the high-end of IQ is common practice in screening police officer applicants, nor do I know if there is any good data to support the practice. I do know that screening for other occupations sometimes excludes applicants with high IQs because of the expectation that highly intelligent persons would be bored by the work. The trade-off is a higher retention rate in exchange for the marginal improvement in job performance (if there actually is any) associated with a few extra IQ points at top end of the IQ scale.
By the way, it looks like the New London police used the Wonderlic to test applicants. If that's the case, the acceptable range for applicants was an IQ between 100 and 115 (roughly, between the 50th-84th percentile of intellectual functioning). Mr. Jordan's score placed him in the neighborhood of the 95th percentile.