http://www.tsowell.com/speducat.htmlWhile there are examples of schools where this happens in our own time-- both public and private, secular and religious-- we can also go back nearly a hundred years and find the same phenomenon. Back in 1899, in Washington, D. C., there were four academic public high schools-- one black and three white.1 In standardized tests given that year, students in the black high school averaged higher test scores than students in two of the three white high schools.2
This was not a fluke. It so happens that I have followed 85 years of the history of this black high school-- from 1870 to 1955 --and found it repeatedly equalling or exceeding national norms on standardized tests.3 In the 1890s, it was called The M Street School and after 1916 it was renamed Dunbar High School but its academic performances on standardized tests remained good on into the mid-1950s.
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Important as the history of outstanding schools for minority students has been, there is also much to learn from the history of very ordinary urban ghetto schools, which often did far better in the past-- both absolutely and relative to their white contemporaries-- than is the case today. I went to such schools in Harlem in the 1940s but I do not rely on nostalgia for my information. The test scores in ordinary Harlem schools in the 1940s were quite comparable to the test scores in white working-class neighborhoods on New York's lower east side.
I have a copy of this book. It's analysis is flawed in some respects, but it captures the essence of what Sowell's essay presents.
http://www.amazon.com/Rising-Rails-Pullman-Porters-Making/dp/product-description/0805070753