NEW YORK - The United Federation of Teachers has stopped the city Department of Education from releasing data rating the job performance of 12,000 teachers until a court hearing next month.

The Department of Education planned to release the teacher ratings after news organizations filed Freedom of Information Law requests.

The grades were found using an algorithm that takes into account the students scores on state tests, as well as economic status, gender and ethnicity.

Some parents were outraged and are calling for the release of the grades, while teachers say the grading method is a way to ostracize them.

Lawyers for both sides said the city agreed it would not release the performance ratings with the teachers' names attached pending a court hearing on Nov. 24.