Public schools already have too much power and a lack of accountability. Bush's decision to increase the federal government's role has made matters worse:
Since 2001, when the No Child Left Behind Act tied federal school funding to performance on annual tests for students in grades three through eight, critics have charged that the law encourages schools to boost their test scores artificially. A new study of one potential score-padding maneuver–suspending probable low scorers to prevent them from taking the test–provides grist for this argument. Researchers examined more than 40,000 disciplinary cases in Florida schools from the 1996-1997 school year (when Florida instituted its own mandatory testing) to the 1999-2000 school year. They found that when two students were suspended for involvement in the same incident, the student with the higher test score tended to have a shorter suspension. This isn't in itself surprising: high achievers are often cut some slack. But the gap was significantly wider during the period when the tests were administered, and it was wider only between students in grades being tested that year.
Link.