Yes, and performance is often correlated with property tax revenue. Low funds means less resources which influences the outcomes and behaviors of those kids. Put differently, "Anyways, the people make the place -- and that includes kids." is less true than the available resources make the place.

A reasonable analysis would be less of the anecdotal "evidence" about laziness, and more of the demographics of that particular district.

By "unfairly placed", it addresses what you quoted: "The bad school had dull kids with bad parents." Was the commenter one of those bad parents, since they were by definition in that category? Or are they suggesting they were one of the good parents that was in the wrong place? Or did they become good parents once they found a better school?