HT to Joanne Jacobs
Data shows that at least between 1 in 4 and 3 out of 10 high school freshmen fail to graduate in four year. Of course these are just average numbers, among minorites the numbers are closer to 1 in 2 don't graduate in 4 years.
I realize that most poeple probably are not shocked by such statistics, indeed many probably accept such statistics as par for hte course. The belief that a certain amount of children will always fail may actually lead to a self-fullfilling prophecy.
If you look around commentators on education implicity accept this concept, that a certain number of kids will fail--for whatever reason. However quixotic it may be in the real world, failing to set as a goal 100% pass rates and 100% graduation rates means that we accept failure as a normal course of educational business. From a broad statistical standpoint, that may be fine, but each percentage point represents kids, real kids, in the real world that we, as adults and society, have failed.
Full Data Here