The chairman of a Kentucky school board who is accused of cheating on a GED exam has resigned from the board.

The Mountain Advocate in Barbourville (http://bit.ly/1qGT0cI ) reports that Knox County school board chairman Dexter Smith resigned Friday.

Smith, who dropped out of high school at 17, signed up to take the GED exam in hopes of settling a controversy about whether a diploma he bought online was real. But Kentucky State Police allege Smith had another person take the test for him.

The Kentucky Department of Education requires that school board members have a high school diploma or GED. Trooper Shane Jacobs said Smith signed a statement declaring he met the requirements when he ran for office three years ago.

Jacobs said state police submitted its perjury investigation to prosecutors, who will decide whether to pursue charges.