Wall Street Journal:

School vouchers are usually opposed by teachers unions and their Democratic allies, but a dirty little secret is that some suburban Republicans oppose them too. The latter is the case in Wisconsin, where GOP Governor Scott Walker’s plan to get more kids out of failing schools is facing opposition from short-sighted members of his own party.
The Badger State’s 22-year-old voucher program currently covers Milwaukee and Racine. But in his budget for fiscal 2014-15, Mr. Walker wants to expand it to nine of the state’s worst school districts and increase funding by 9%. Under the proposed formula, students in districts that have at least two schools that get a D or F on their 2011-2012 performance report cards could use a voucher at a private school.
The plan would cover 500 new students in the first year, 1,000 in the second, and thereafter as many as qualified under the formula, which extends the voucher to students in failing schools whose families make 300% of the poverty level. The new areas include Beloit, Green Bay, Kenosha, Waukesha and Fond du Lac, and more than 40,000 children who currently attend lousy public schools would be eligible.
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While Wisconsin schools score better than most, in 2010 the National Assessment of Educational Progress found that Wisconsin’s black fourth grade students had the worst reading scores in the country. By eighth grade, black students did worse on English tests than students for whom English was a second language.