Speculating about how many and what kind of students were opting out of standardized tests was a fun education parlor game this spring. Highly energized proponents claimed the opt-out movement was a diverse cross-section of public school students. Critics responded that, no, it was a movement of affluent white parents and not that many of them. And, as usual with education debates, most Americans said, "what?" Now, though, we have actual data from opt-out ground zero in New York State, released late last week, and it turns out the proponents and opponents of opt-outs were both right and wrong about what happened.