Why Charter Schools Fail the Test

Charles Murray:

THE latest evaluation of the Milwaukee Parental Choice Program, the oldest and most extensive system of vouchers and charter schools in America, came out last month, and most advocates of school choice were disheartened by the results.

The evaluation by the School Choice Demonstration Project, a national research group that matched more than 3,000 students from the choice program and from regular public schools, found that pupils in the choice program generally had "achievement growth rates that are comparable" to similar Milwaukee public-school students. This is just one of several evaluations of school choice programs that have failed to show major improvements in test scores, but the size and age of the Milwaukee program, combined with the rigor of the study, make these results hard to explain away.

So let's not try to explain them away. Why not instead finally acknowledge that standardized test scores are a terrible way to decide whether one school is better than another? This is true whether the reform in question is vouchers, charter schools, increased school accountability, smaller class sizes, better pay for all teachers, bonuses for good teachers, firing of bad teachers -- measured by changes in test scores, each has failed to live up to its hype.

Jay Greene:

Murray wants to be clear that he still favors choice, but not to improve test scores. Instead, he favors choice because it satisfies the diversity of preferences about how schools teach and what they teach. Standardized test scores impose a uniform concept of higher achievement on students, and so cannot capture the improved satisfaction of the diversity of tastes that choice can more efficiently satisfy.

There is a kernel of truth in Murray's argument. We should support school choice simply because it allows us the liberty of providing our children with the kind of education that we prefer.

Posted by Jim Zellmer at May 6, 2010 1:32 AM
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