By Gary Rubinstein, Special to CNN
Editor’s Note: Gary Rubinstein is a high school math teacher and the author of two guidebooks for new teachers, “Reluctant Disciplinarian” and “Beyond Survival.” He is also a two-time recipient of the Math for America Master Teacher Fellowship. He blogs at http://garyrubinstein.teachforus.org
In a recent investigation, the Atlanta Journal-Constitution analyzed data from nearly 70,000 schools and found indications of standardized test cheating in as many as 200 districts.
