A new study casts a shadow on the prospects of New Jersey students. Many Garden State residents think that poor-performing schools are confined to low-income neighborhoods in the inner city. Yet according to a study from the Pacific Research Institute, the data show that public schools in New Jersey’s affluent suburbs are also failing. The study compiled SAT scores from predominantly middle-class high schools where at least 80 percent of students took the test. At nearly three in 10 schools, more than half of students failed to meet the college readiness benchmark score of 1550.