Even the wording on these tests can be skewed towards the wealthy, as noted by
@Travelman32.
For example: I come from the suburbs and I have worked with people who grew up in the city. There were instances where both of us were ignorant to what the other was saying, or words that we were using. The kids from the city didn't know what pine sap was, because they had no trees around. They called it "sticky tree juice." They didn't know what poison ivy was - they had never had it. One of them had never heard the word jacuzzi. Conversely, there were many words and terms that they used that I didn't know. It doesn't make either of us less smart, it just means we know different things, and tests really need to account for that. Is this an intelligence/ability test, or just a contest to see how many words and math formulas one can remember?