Posted by Jay Livingston
The Washington DC voucher program gave kids from poor families up to $7500 to cover the costs of attending private schools. The program, OSP (for Opportunity Scholarship Program) was started in the recent Bush administration, and it’s based on an idea much cherished by conservatives: private is good, public is bad. Programs run by the government (like public schools) are not as good as similar programs run by private entities (like private schools).
The results three years out have now been published (here). In reading, the voucher kids were 3.7 months ahead of their public school counterparts. In math, there was no difference.
The Washington Post story ran with the headline
Study Supports School Vouchers
In District, Pupils Outperform Peers On Reading Tests
In District, Pupils Outperform Peers On Reading Tests
But does this mean that private schools do a better job of educating poor kids? If so, they should do a better job at teaching math as well. But they don’t.
I don’t really know what’s going on, but I have a guess. Reading is not just about decoding strings of letters. It is part of a general verbal ability. Kids learn verbal skills in school from teachers, but they also learn them from everyone they hear. For most of our time on this planet, we humans did not read or write or go to school, yet we learned to speak the language of our respective cultures. We learned from those around us. We still do.
If you send a kid to a school with children whose parents are willing and able to spend $6600 a year or more (sometimes much more*), that kid will be talking with kids whose verbal skills – vocabulary, grammar, syntax – are more sophisticated than what kids might hear in the public schools of Washington DC. That affects reading scores because among schoolchildren, at least when the teacher isn’t insisting they be quiet, verbal interaction is constant. Mathematical interaction, not so much.
So, at least when it comes to verbal skills, it’s not the kind of school that you go to that makes a difference. It’s the kind of kids who attend that school.
* The tuition at Sasha and Malia’s school, Sidwell Friends, is $28,000. Most of the OSP students went to much less costly schools. Over half the OSP kids (59%) went to Catholic schools, another fifth (22%) went to other faith-based schools (a category that may include Sidwell Friends, a Quaker school). The average income was about $22,7000, slightly above the poverty line; virtually all the kids were black or Hispanic.