achievement gap achievement gaps advanced placement program california christopher edley jr. civil rights college board college readiness connecticut david c. bury desegregation digital tablets diversity eden prairie minnesota eisenhower elementary eligibility equity and excellence commission furman university gina cairney ipads jack schneider jerry brown language immersion schools lesli a. maxwell mariano-florentino "tino" cuellar melissa krull minnesota state university national coalition on school diversity national council of teachers of mathematics national summer learning association new jersey new york city opportunity gap parental involvement paul thomas poverty public school sat school funding stu silberman student performance summer learning programs tebow bill tucson arizona tucson unified school district tulsa public schools uri treisman valerie strauss virginia wendy lecker