OMAHA, Neb. — A federal judge set a trial date on Friday for a former teacher accused of fleeing to Mexico with a middle school student.

The case of 26-year-old Kelsey Peterson is scheduled to go to trial July 8. She disappeared with her former student in October after school officials told her they were investigating their relationship.

Her lawyer, James Martin Davis, had hoped to reach a plea deal that would drop the federal charges and allow Peterson to plead guilty to state sexual assault charges.

Peterson pleaded not guilty to federal charges of crossing the border to have sex with a minor, which carries a minimum sentence of 10 years. She also faces state charges including a kidnapping, which could carry a life sentence, and first-degree sexual assault.

U.S. attorney Joe Stecher declined to comment on plea negotiations.

The 14-year-old boy who fled with Peterson will attend her trial, and he is expected to testify against his former sixth-grade math teacher, his lawyer Amy Peck said Friday.

Peterson and the boy left Lexington in October when the boy was 13. They were found a week later in Mexicali, Mexico.