Kaya Henderson (Matt McClain/The Washington Post)

Speaking at Mayor Vincent C. Gray’s regular news briefing, Henderson said she met with Inspector General Charles Willoughby about two weeks ago to discuss the status of the probe. She did not describe any findings but said they would be available soon.

“They indicated that they are wrapping up,” she said. “I expect we should see some results very soon.”

The U.S. Education Department has also been active in the investigation, sparked by a USA Today piece looking at high rates of answer sheet erasures at more than 100 D.C. public schools between 2008 and 2010. The District has hired a New York firm, Alvarez and Marsal, to look at possible testing irregularities on the 2011 DC CAS.