Corinthian Colleges, Inc., a chain of for-profit colleges, said in a federal filing Wednesday [1] that the U.S. Education Department had rejected "many" of the company's requests for new programs because of concerns about its reporting of job placement and other information. Company officials disputed an assertion made in a January letter from the Education Department that Corinthian had "admitted falsifying" placement or grade information, saying instead that the company had detected and reported to federal authorities "isolated instances" of misreporting.