The New Jersey Department of Education has announced an investigation into standardized test results at 38 schools (list here). The issue is a high number of "erasures" where a wrong answer was changed to correct. Another smoking gun: some schools being investigated show a large jump in test scores, this year versus last.

Recently, in Atlanta, Georgia, a simmilar investigation uncovered widespread, systematic cheating that resulted in 138 administrators and teachers being asked to resign. 

Editor's Note: Unlike the scandal in Georgia which was uncovered when whistleblowers were fired, the investigation in New Jersey was uncovered as part of a routine review of test scores.