This article reports the delayed release of information by many states about whether schools and districts have made adequate yearly progress under the federal No Child Left Behind Act until after September 8. Among the states that delayed their release of complete information include Illinois, Kansas, Louisiana, Maine, and Massachusetts. State officials are blaming the delays on the addition of new tests or, in a few cases, on problems with test vendors. The 2005-06 school year was the first in which all states had to give reading and math tests in grades 3-8 and at least once in high school to comply with the law. The tests are the primary basis for calculating whether schools and districts have made adequate yearly progress (AYP) as required under the law, a 4 1/2-year-old rewrite of the Elementary and Secondary Education Act that seeks to raise all students to academic proficiency by 2014.