I remember one day some student claimed that he got a perfect score on the GRE and the ETS wrote to him congratulating on achieving this rare feat. Years later when I was reading ETS material it was claimed that a perfect score of 800 was not considered to be different from say 740 lying within a certain error range,
I doubt he received such a letter.
Because then millions of letters had to be sent.
In IIT people were obsessed with certain scores retaking a test again and again. It was expensive, and universities in the USA did not care – if one got a 770 or 800.
At universities they put very little importance to scores.
But IITians paid hefty fees – for GRE or GMAT – to retake the tests.
ETS and GMAC were seen going smiling to banks.