[verga]

What would the “wrong” message be?

We already know that public schools are detrimental to the health, morals, and liberty of humanity,

urban schools are just 10 orders of magnitude worse.

So the parents bear no responsibility?

If you believe that it is the school responsibility to teach children how to behave in public than you are much a part of the problem as you seem to put on the schools.

Parents are the first teachers that children have for 5 years. It is their responsibility to teach them civility and decorum.

[MrB]

Indeed, it’s almost 100% on the parents and their culture.
And I don’t want MY kids around THEIR kids unless they train them right, and they won’t and can’t.

[gogeo]

So the parents bear no responsibility?

???

What kind of education will a child with the best parents get from urban schools such as this?

While your point is true, it's irrelevant to the issue being discussed.