Former NYC School Chancellor Cathie BlackNY Times

Schools Chancellor Cathie Black has stepped down for her New York City position just five months after she took up the position. She will be replaced by Deputy Mayor and former Board of Education president Dennis Walcott.

In November 2010 Black took over the position from Joel Klein who stepped down in January.

Recently a NY1 / Marist poll showed that just 17 percent of voters thought Black was doing an excellent job.

At the time Mayor Bloomberg came under very harsh criticism for appointing Black. Over the last five months Black, the former Hearst Magazines chairwoman has taken heat over her lack of education credentials. Also her children attend boarding school in Connecticut.

Bloomberg made a deal with New York State's education commissioner to have Black appointed. The deal meant creating a chief academic officer to be Black's second-in-command, to guide her in her now role.

Black's departure comes after four high-level deputies resigned from her office including two this week.

Blacks move to step down was announced by Mayor Bloomberg at a City Hall press conference at 11.30 am on Thursday.