MEMPHIS, Tenn. (AP) — Tennessee officials say the head of the state-run Achievement School District is resigning.

Tennessee Education Commissioner Candice McQueen said in a news release Wednesday that Achievement School District Superintendent Malika Anderson is stepping down at the end of the month. Deputy Commissioner and Chief Operations Officer Kathleen Airhart will step in as interim superintendent.

The district was created by the state to oversee schools in the bottom 5 percent academically. Many of its 32 schools are in Memphis.

No reason was given for Anderson’s resignation. A search for her replacement is underway.

The Commercial Appeal reports Anderson’s resignation comes a week after the district’s high school results showed little to no growth on TNReady assessment tests taken by students at the end of each school year.