What is the relationship between educational test scores (e.g., SAT and ACT) and social class?

A) There is no relationship between educational test scores and income.
B) As average family income goes up, so do SAT scores.
C) SAT scores are unpredictable, regardless of parents' social class and income.
D) Social class does not have much effect on SAT and ACT scores.

Several studies have found that students from higher-income families tend to score higher on standardized tests like the SAT and ACT. This may be due to factors like better access to resources, including high-quality schools, test preparation services, and tutoring. Additionally, students from lower-income families may face other challenges, such as less time to devote to studying due to work or family responsibilities, which may negatively impact their test scores.