This is regarding regular testing, not standardized testing;
I saw a "fellow student " "studying " for a history test by writing on his hand immediately before the test. I reported it to the teacher who did - NOTHING!
The teacher used the same old test year in and year out. This "fellow student" had an older sib who had the same teacher a couple of years before, so conceiveably could have studied the test from his sib. This "fellow student" also got the highest grade on every test in history of all five classes that this teacher taught. The teacher told me that he had always suspected that he was cheating in some way, but he did NOTHING!
Otherwise it would be too much work.
I also saw this in college and at the graduate University level. Teachers and University professors usually do nothing unless the cheating is blantantly thrown up into their face.
Back to the topic, I do know that there is pressure in many schools and districts to keep up the scores on these tests by any measure, so I am not surprised to see administrators look the other way when confronted with evidence of cheating.
"Vaccines are like a box of chocolates. You never know what you're gonna get - acute hemorrhagic edema of infancy, allergies, diabetes, eczema, petit/gran mal seizures, ADEM, AFP, ASIA, CFS, GBS, JPA, JRA, LGS, LKS, MS, POF, POTS, RA, SJS, SLE, SPD, TPI, Henoch-Schonlein purpua, fibromyalgia, Retts Syndrome, encephalitis, Hughes Syndrome, neurological damage, coma, or death."
~paraphrased from "Forrest Gump"~