On: Venezuela's squatter skyscrapers; as the country d...

[yummyfajitas]

Hypothetical: if teacher A has a class of poor black students, and teacher B has a class of rich asian students, shall we directly compare test scores? If teacher A's students perform 1 stddev worse than teacher B's, shall we fire teacher A for poor performance?

If you don't want to do it for teachers, why do it for educational systems?

[michaelchisari → yummyfajitas]

I prefer not to reduce complex, intersecting systems to oversimplified hypotheticals.

[yummyfajitas → michaelchisari]

Huh? You want to ignore all factors relevant to the question except one (school quality), I try to introduce a second factor, and I'm oversimplifying?

Please go look up the definition of "simple".

[michaelchisari → yummyfajitas]

I'm sure that's how you see it, but the fact is, that the OP posited the idea that unions were incompatible with a healthy education system. There are simply too many counter-examples to that.

Further, you've pushed the conversation into a discussion about race and class by way of an abstract hypothetical. From your posting history, I'm not really interested in having such a complex discussion with you.