In fact, there are some "child prodigies" out there who are simply drilled from a young age to pass specific intelligence tests. If you're an overbearing parent desperate to live vicariously through your children, you can turn a fairly normal child into a "child prodigy." It only costs you a lot of time and money and it only costs your child their childhood.

IQ doesn’t measure intelligence

We don't even have agreed upon definition for intelligence so that seems like a weird claim to make.

• The ability to acquire, understand, and use knowledge.
• the ability to learn or understand or to deal with new or trying situations
• the ability to apply knowledge to manipulate one's environment or to think abstractly as measured by objective criteria (such as tests)
• the act of understanding
• the ability to learn, understand, and make judgments or have opinions that are based on reason
• It can be described as the ability to perceive or infer information; and to retain it as knowledge to be applied to adaptive behaviors within an environment or context.