The article "How family background influences student achievement" by Anna J. Egalite. After you have read it, you need to create two studies, one correlation and the other causal-comparative. You don't have to go into great detail, just the basics of each study.
Give me your subjects, the variable(s) you are looking at and what you are measuring to determine a correlation or causal-comparative relationship.
The variables listed in the article include family income, parental education, and parental incarceration.