Mike Miles, the Broad-trained superintendent of the Dallas Independent School District,  is under investigation by the Board of Education’s Office of Professional Responsibility.

According to investigative journalists, OPR is inquiring into charges that Miles interfered with an official inquiry and manipulated the bidding process for contracts.

An internal report to the board was published on the Internet by a board member.

The board’s top investigator accused Miles of trying to interfere with his investigation. Miles denied any wrongdoing.

At least six of Miles’ top staff have left in the year since he started work in Dallas, and groups have led protests against him.

He came to education from a military background.

Just today, the district’s trustees voted to hire an independent investigator of the charges against Miles.