Facts are stubborn, but statistics are more pliable.
The search “cheating by school districts” returned 12,000,000 results in 0.34 seconds. The first page of articles includes large cities and huge school districts, such as Atlanta, Philadelphia and Columbus, Ohio. A friend of mine a couple of years ago received a group of special education students who had supposedly passed the state exam. Upon further work with these students, she discovered the group could not read.