BROOKLYN - Opposition is mounting against the publishing executive chosen by Mayor Michael Bloomberg to run the city's schools.

An advisory panel appointed to weigh the qualifications of Hearst Magazines Chairwoman Cathie Black recommended on Tuesday denying a waiver that would allow the non-educator to serve as chancellor of the country's largest school system.

"Would you take this wonderful manager, because she is impressive, and make her the head of the police department or the fire department?" asks Brooklyn Councilman Jumaane Williams (D-District 45). "You probably wouldn't, and the 1.1 million kids in New York City and the tens of thousands of kids in my district should be held in the same regard."

State Education Commissioner David Steiner says he might grant Black a waiver if the mayor places an educator as her second-in-command.