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INTRO
| PRESS RELEASES
| REPORTS
& REVIEWS | WEEKLY
REPORTS | RELATED
ARTICLES
Think
Twice
Think
Tank Review Project
Think
Twice is one of the nation’s first efforts to serve
as a watchdog to review think tank research on public education
issues and policies, ensuring that published work meets
the quality and standards of university scholarship. As
think tank research becomes increasingly important reference
sources in public policy debates, media and other critics
have called for increased scrutiny to ensure validity and
objectivity (click here
to see related stories).
The
goal of the Think Twice project is to provide the public,
policy makers and the press with timely academically sound
reviews of selected think tank publications. It is a collaboration
of the Education Policy Studies Laboratory at Arizona State
University and the Education and the Public Interest Center
at the University of Colorado at Boulder and is funded by
the Great Lakes Center for Education Research and practice. [ Click
Here For Full Description ] |
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Here To Read Our Legal Statement

Reports & Reviews for 2009
| Report Reviewed: |
Multiple Choice: Charter School Performance in 16 States
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| Publisher/Think Tank: |
Center for Research on Education Outcomes (CREDO), Stanford University |
This report involved a large scale analysis of 65-70% of the nation’s charter schools and found that average charter performance is equal to, or perhaps lower than, the performance of traditional public schools. |
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| Think Twice Review Date: |
June 24, 2009 |
| Reviewer: |
Gary Miron and Brooks Applegate, Western Michigan University |
Miron’s and Applegate’s review of the report finds that the solid analytic approach employed and the comprehensive data set used make the report a valuable addition to the body of charter school research. |
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| Report Reviewed: |
The MPCP Longitudinal Educational Growth Study Second Year Report
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| Publisher/Think Tank: |
School Choice Demonstration Project; Department of Education Reform, University of Arkansas |
This report on the second year of a five-year evaluation of the Milwaukee school voucher program finds no achievement growth differences between voucher schools and the Milwaukee Public Schools over a one-year period. |
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| Think Twice Review Date: |
May 28, 2009 |
| Reviewer: |
Casey Cobb |
Cobb's review finds that the report's design and methods are sound, but its usefulness is limited by several factors, including a lack of clarity about the representativeness of the included voucher schools.
Correction
On June 24, 2009, the authors of the report under review brought to our attention an error in the original May 28, 2009 review of their work by Casey Cobb. Professor Cobb has revised his review accordingly. As revised, the review includes an important correction. In the initial review, Professor Cobb made an incorrect assumption about the sampling procedures used in the study. As a result, he drew the incorrect conclusion that the external validity of the findings was tempered by a non-random sample of MPCP students, and hence a non-representative sample of MPCP schools. As the study authors have pointed out, the MPCP sample was in fact drawn randomly. |
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| Report Reviewed: |
Charter Schools in Eight States: Effects on Achievement, Attainment, Integration and Competition
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| Publisher/Think Tank: |
RAND Corporation |
This report on charter schools in eight states generally finds that charters have had only modest or insignificant effects on such things as student achievement, student attainment, integration and public school competition. |
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| Think Twice Review Date: |
May 27, 2009 |
| Reviewer: |
Derek C. Briggs |
Briggs’s review finds some weaknesses in the data regarding some of the findings, but overall concludes that the report is of high quality and makes an important contribution to the empirical literature on charter school effectiveness. |
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| Report Reviewed: |
Evaluation of the DC Opportunity Scholarship Program: Impacts After Three Years
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| Publisher/Think Tank: |
School Choice Demonstration Project; Institute of Educational Sciences, National Center for Educational Evaluation and Regional Assistance |
The report finds that after three years, students in the D.C. voucher program showed modestly higher reading scores, but no significant difference in math scores when compared with a control group of students who didn’t get vouchers. |
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| Think Twice Review Date: |
May 21, 2009 |
| Reviewer: |
Martin Carnoy, Stanford University |
Carnoy’s review points out that any change in scores is modest and provides little support for vouchers as a solution to D.C.’s educational problems. He suggests that the report could have done far better in analyzing the results and presenting them in a more nuanced fashion. |
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| Report Reviewed: |
The Effect of Milwaukee's Parental Choice Program on Student Achievement in Milwaukee Public Schools
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| Publisher/Think Tank: |
Choice Demonstration Project; Department of Education Reform, University of Arkansas |
The report contends that competition from Milwaukee's private school voucher program has benefited Milwaukee public schools. |
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| Think Twice Review Date: |
May 18, 2009 |
| Reviewer: |
Gregory Camilli, Rutgers University |
Camilli's review raises a number of questions about the statistical methods used in the report and concludes that any positive effect of competition is very small, if it exists at all. |
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| Report Reviewed: |
Weighted Student Formula Yearbook 2009
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| Think Tank: |
Reason Foundation |
The report examines 14 city school systems and one statewide one - Hawaii- that the report presents as reflecting "best practices" in implementing what it calls Weighted Student Funding reforms. The report is based on two underlying premises: (1) school budgets should be allocated directly to schools within a district, with the amount based on each child's needs; and (2) school principals should have full discretion on how to allocate those funds. |
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| Think Twice Review Date: |
May 13, 2009 |
| Reviewers: |
Bruce Baker, Rutgers University |
The Baker review of the report finds that it cherry-picks evidence, lumps many different strategies under a single reform umbrella, ignores contradictory findings, and in one-third of its examples credits the reforms for outcomes that actually preceded the reforms themselves. Baker concludes that the report is reckless and irresponsible. |
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| Report Reviewed: |
The Impact of Milwaukee Charter Schools on Student Achievement
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| Think Tank: |
Brookings Institution |
This report finds that there are no math achievement gains and small gains in reading in students who attend Milwaukee charter schools when compared to traditional public schools. The report also found that there is no evidence that the presence of charter schools influences that performance in traditional public schools. |
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| Think Twice Review Date: |
May 5, 2009 |
| Reviewer: |
Robert Bifulco, Syracuse University |
Though Bifulco finds that the methods used in the study have important strengths, he identifies several questions about the internal and eternal validity of the reported estimates. He indicates that this report is most informative when considered in the context of the larger body of research on charter schools. He finds the report's conclusion that charter schools "should not be expected to be the silver bullet that some reformers seek" to be reasonable. |
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| Report Reviewed: |
The Fiscal Impact of the Milwaukee Parental Choice Program: 2009 Update
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| Think Tank: |
School Choice Demonstration Project;
Department of Education Reform University of Arkansas |
This report examines issues concerning the funding formula used for the Milwaukee Parental Choice Program and finds that it generates a net savings to taxpayers in Wisconsin but imposes a large fiscal burden on taxpayers in Milwaukee. |
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| Think Twice Review Date: |
April 27, 2009 |
| Reviewer: |
Christopher Lubienski, University of Illinois |
Belfield finds that the report offers valuable insights on the fiscal impact of voucher programs. However, he questions the benefits and notes that the report omits some important factors which are essential in order for a more complete analysis to be done. |
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| Report Reviewed: |
A Win-Win Solution: The Empirical Evidence on How Vouchers Affect Public Schools
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| Think Tank: |
Friedman Foundation for Educational Choice |
This report purports to present a summary of previous research about the competitive effect of vouchers on public schools. The report concludes that such competition improves public schools. |
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| Think Twice Review Date: |
April 27, 2009 |
| Reviewer: |
Christopher Lubienski, University of Illinois |
Lubienski finds that the report misrepresents the research and selectively reads the evidence in some of the studies. He points out that the majority of the studies cited were produced by voucher advocacy organizations and almost none were peer reviewed. Lubienski concludes that the report is actually “an overview that seems designed to build a pro-voucher argument rather than an evenhanded presentation of research.” |
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| Report Reviewed: |
When Private Schools Take Public Dollars: What’s the Place of Accountability in School Voucher Programs?
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| Think Tank: |
Thomas B. Fordham Institute |
This report examines the opinions of experts who are school choice advocates regarding accountability issues for private schools that accept public monies (vouchers). |
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| Think Twice Review Date: |
April 15, 2009 |
| Reviewer: |
Ernest House, University of Colorado at Boulder |
House praises the report and says that it offers some useful insights. He credits the Fordham researchers with making an honest attempt to tackle the difficulties of holding private schools accountable. |
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| Report Reviewed: |
An Evaluation of Teachers Trained Through Different Routes to Certification
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| Think Tank: |
Mathematica Policy Research, Inc. |
This report finds that students who were assigned an alternatively certified teacher did no worse on achievement tests than students whose teacher came through the traditional teacher-education route. Moreover, the report concludes that there is no association between greater amounts of teacher training coursework and effectiveness in the classroom. |
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| Think Twice Review Date: |
March 10, 2009 |
| Reviewer: |
Sean P. Corocoran, New York University and Jennifer Jennings |
In their review of this report, the authors find that the conclusions drawn by the report are not supported by the report’s actual data. They contend that few, if any, valid conclusions about teacher certification policy can be drawn from the Mathematica report and that any conclusions that are drawn tend to favor traditional certification routes. |
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| Report Reviewed: |
The High Cost of High School Dropouts in Ohio
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| Think Tank: |
The Buckeye Institute for Public Policy Solutions |
This report offers up “dropout recovery” charter schools as a solution to reduce Ohio’s dropout rates. |
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| Think Twice Review Date: |
March 4, 2009 |
| Reviewer: |
Sherman Dorn, University of South Florida
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In his review of this report, Dorn finds that the data the report relies upon is grossly exaggerated when compared to Ohio state data regarding the number of students graduating from charter schools. In addition, Dorn points out that the report ignores a large body of useful charter school research. He recommends that policymakers seek out well-researched scholarship on this topic and not rely upon this report. |
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