The judge hearing pre-trial motions in the case released the decision in court Friday.
Michael Rafferty, 30, is charged with first-degree murder in the 2009 death of the Woodstock, Ont., girl.
Jury selection begins Feb. 27.
Stafford disappeared while on her way home from school in April 2009 and her body was found months later.
Rafferty's trial was moved from Woodstock to nearby London in light of publicity surrounding the girl's death.
Pre-trial motions in the case are covered by an extensive publication ban.
Rafferty's co-accused, Terri-Lynne McClintic, has already been convicted of first-degree murder in the girl's death.