The chief of D.C. secondary schools has been removed from her post, making her the highest-ranking official to be relieved of duties following an investigation into whether Ballou High School in Southeast Washington improperly graduated students.

D.C. schools spokeswoman Kristina Saccone said officials placed Jane Spence, the secondary schools chief, on administrative leave, but she would not say if or when Spence would return to her job. Saccone would also not say when Spence was placed on leave.

All middle and high school principals report to Spence, who works out of D.C. Public Schools headquarters.

Spence did not immediately reply to a request for comment Tuesday afternoon.

Ballou's principal, Yetunde Reeves, was reassigned to the school system's headquarters in December pending the results of the investigation.