The summer issue of the Peabody Reflector asked NCPI director, Matthew Springer: Is traditional certification the best way to assure teacher quality? Springer noted that existing certification practices are weak predictors of teacher effectiveness; and, as a result, policy makers need to move away from regulating the labor market before a teacher enters the classroom. Instead, they should examine how a teacher performs in the classroom, while acknowledging that schooling is a multi-dimensional enterprise and should not rely on a single measure of student performance. Springer acknowledges teacher certification can screen out academically incompetent or unscrupulous practitioners, start teachers on the road to learning the sciences of being a teacher, and protect the public interest by regulating the market is consumers lack expertise to judge quality of service