The District's police and fire/EMS departments have been added to the growing list of city agencies on which residents can offer feedback to grade their performances.

"After we see how this operates with five agencies and work out any imperfections that exist, we'll expand it," Mayor Vincent Gray said in July when announcing the first five agencies.

On Wednesday, the mayor kept his word. He added five more: the Metropolitan Police Department, Fire and Emergency Medical Services, the Office of Unified Communications, the Public Library and the Office on Aging.

"Mayor Gray's Grade DC initiative is a wonderful way for District residents to tell us how their library serves them," said Chief Librarian Ginnie Cooper. "We are happy to be a part of this."

Introduced in June, Grade DC uses a program from newBrandAnalytics that collects feedback submitted via Facebook, Twitter, text messages and the city's site, Said to be one of the first of its kind in the United States, the program costs the city about $167,000 annually to run.

The five original agencies in the program were the Department of Consumer and Regulatory Affairs, the Department of Transportation, the Department of Motor Vehicles, the Department of Parks and Recreation, the Department of Public Works and 311/911.

The five new departments were chosen based on public feedback and an internal analysis of which agencies are the most "public facing." Gray also announced that Grade DC aims to add five more agencies in 2013.

The original groups had been graded twice before, in July and August, before September's grades were announced. The grades in the five departments have improved from a range of C-minus to B-plus in June to B-minus to B-plus in September.

"We won't be satisfied until every agency gets an A," Gray said during the summer.