system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are standardized tests considered to be racially biased?
gpt
Heres a real Texas TAKS test question that is a good example of bias on a test. 
Some students wanted to make a model to
show how the size of the moon compares with
the size of Earth. They used an orange to
represent the moon. Which of the following
would best represent Earth?

Answers: cantaloupe, grape, lime, or cherry

You can argue a student should know what those fruits are, but the bottom line is the questions do not test only the knowledge of the size of the Earth and Moon, but what these fruits are. This can be hard for an English language learner, or poor students who likely do not eat as much fruit.