In the wake of an epic scandal of the Atlanta Public Schools, a new report reveals other major districts are marred by teacher cheating.

The rigor and scale of Atlanta Georgias' independent investigation -- believed to be the deepest look into teacher cheating in U.S. history -- will either spur states into action when it comes to questioning rising student test scores or scare officials away from drawing attention to potential flaws at their schools.

As Atlanta deals with the fallout of a report that exposed widespread, systemic cheating by educators on standardized tests, more and more such episodes -- and their aftermaths -- have unfolded from Washington, D.C., to Pennsylvania.