The Atlanta public school cheating scandal is but “the tip of the iceberg,” reports Bob Schaeffer, public education director of the National Center for Fair and Open Testing. A new FairTest survey reports confirmed cheating incidents in 37 states and the District of Columbia in just that last four years. It also lists 50 ways adults in public schools artificially boost test scores. When everyone cheats, you know something is wrong with the test. In fact, high-stakes testing — in which jobs and even the existence of schools depend on the results of a standardized test — is a perverse …