Frederick M. Hess and Andrew P. Kelly :

The authors of the Government Accountability Office’s for-profit secret shopper investigation pulled off a statistically impressive feat in August. Let’s set aside for the moment that on Nov. 30, the government watchdog quietly revealed that its influential testimony on for-profit colleges was riddled with errors, with 16 of the 28 findings requiring revisions. More interesting is the fact that all 16 of the errors run in the same direction — casting for-profits in the worst possible light. The odds of all 16 pointing in the same direction by chance? A cool 1 in 65,536.
Even the most fastidious make the occasional mistake. But the GAO, the $570 million-a- year organization responsible for ensuring that Congress gets clean audits, unbiased accounting, and avowedly objective policy analysis, is expected to adhere to a more scrupulous standard. This makes such a string of errors particularly disconcerting.
In fact, the GAO is constituted precisely to avoid such miscues. Its report-vetting process entails GAO employees who are not involved with the project conducting a sentence-by-sentence review of the draft report, checking the factual foundation for each claim against the appropriate primary source. While the research is compiled and proofed, legislators who requested the investigation may keep in routine contact with the GAO to stay apprised of the inquiry.