New data shows, for the first time at this level of detail, how much students’ standardized test scores rise with their parents’ incomes — and how disparities start years before students sit for tests. One-third of the children of the very richest families scored 1300 or higher on the SAT, while less than 5 percent of middle-class students did, according to the data, from economists at Opportunity Insights, based at Harvard. Relatively few children in the poorest families scored that high; just one in five took the test at all. #satprep #collegeadmissions #applyingtocollege