A one-year deal that uses student test data to evaluate principals was approved Tuesday by the school board, although a similar pact for teachers remains out of reach.

The Associated Administrators of Los Angeles OK'd the deal last month as the district tries to comply with a judge's order to have a new data-based performance evaluation system for its educators in place by Dec. 4.

AALA President Judith Perez said, however, that the evaluation system envisioned by Superintendent John Deasy is too time-consuming, especially given the growing workload facing the district's principals, and the dwindling number of support staff at local school sites. She said that many principals are already working 60 hours a week, and the evaluations would be overwhelming.

Deasy had hoped to be able to announce on Tuesday that the district had reached agreement on an evaluation system with United Teachers Los Angeles. The two sides have yet to reach a compromise.