Countering some other posters' comments, I would claim that the decisions of the ETS WERE racist. Students here were assumed to have cheated, because they came from where they did, and attended this barrio school. Instead of considering each student as an individual, they were stereotyped as less capable.
This is one reason I use this film when I teach sociology classes about race & inequality.
You don't think the fact that this school, which had never had high AP test scores. all of a sudden gets scores that are off the charts raised a red flag? It had nothing to do with ETS being racist, it had to do with the sudden increase in scores from a score that was about to lose its accredation for academics.
“The identities of the students were revealed only after irregularities were found.”
That would include the school or class attended.