Hobby said almost nothing new happens in schools in the runup to an inspection because of the "random quality [of inspectors] and the narrow snapshot [they offer]".
"We have received complaints about the low quality of some inspectors," he said.
And as controversy grows around Ofsted's new inspection regime, there is also increasing concern about the quality of the inspectors themselves.
The Buildings Department, which experienced a rash of fatal construction accidents in the past year that heightened concerns about the public's safety and the quality of its inspectors, registered 25 fatalities in the 2008 fiscal year and 167 injuries, which is more than it had in either the 2006 or 2007 fiscal years, the only other years for which statistics were available.
While the program, known in the Bronx as Clean Halls, began about two decades ago to combat drug dealers who were increasingly being pushed indoors, the police have since expanded their effort to confront "quality of life" offenses, Inspector Sweet said, as well as more serious crimes.
The data combine the observations of the routine vector control workers and of the quality control inspectors, who revisited a systematic sample of 33% of the houses.
Ellen P. Holton, the marketing director of Quality Assurance, said a team of inspectors needed more than 10 weeks to certify all of Whole Foods' stores in the United States and Canada.
Comparing with the corresponding echocardiography sections, the ultrasonic image characteristics of complex congenital heart disease should be understood visually, further ensuring the quality of examination by different inspectors, reducing the rate of misdiagnosis and missed diagnosis.
Some of the homes were closed because state inspectors found repeated health and quality-of-care violations, Mr. Kenny said.
Skytrax, the big British airline-quality research firm, sent teams of inspectors aloft to test flat-bed seats in premium cabins of airlines that offer them.
"So what you're basically doing if you're in a country such as the UK is you're putting your future carbon policy in the hands of Chinese quality control inspectors, because if China drops another Category Seven incident, nobody's going to be able to run reactors".
