In a study by the Urban Institute and the Calder Center in March 2008, published in the Journal of Public Policy and Management, the authors found "TFA teachers tend to have a positive effect on high school student test scores relative to non-TFA teachers, including those who are certified in-field. Such effects exceed the impact of additional years of experience and are particularly strong in math and science."Urban Institute http://www.urban.org/education/evaluations.cfm?page=2
