Public Advocate Bill de Blasio has some strong words for Mayor Michael Bloomberg and the controversial release of teachers' evaluations.

In a letter to the mayor, De Blasio denounced the city's release of data on 18,000 math and English teachers and calls on Bloomberg to immediately release evaluations conducted on his own commissioners and staff.

Two months ago, a judge ordered the release of teacher report cards following several Freedom of Information Act requests by members of the media including NY1.

De Blasio argues that no other public employees have been subject to the same scrutiny.

"The mayor is obviously deadly serious about taking data that is not even accurate or helpful and putting it out for each teacher name by name in public. Again, an act I think is very destructive," De Blasio said. "We don't do that with cops, we don't do that with firefighters, nor should we. We shouldn't do it for any of them. So I'm saying, lets see the mayor do the same thing for his own staff."

Schools Chancellor Dennis Walcott has said the data is old and inaccurate, but believes parents have a right to know.