Clarence Mumford Sr. is set for sentencing Monday in federal court in Memphis.
The 59-year-old Mumford pleaded guilty in February to conspiracy to commit mail, wire, identification and Social Security fraud and one charge of aggravated identity theft. Prosecutors said the two counts can carry seven years in prison.
Prosecutors say teachers in Tennessee, Mississippi and Arkansas paid Mumford $1,500 to more than $3,000 to have ringers take the Praxis certification tests for them. That fee included fake driver's licenses Mumford made for the test-takers, who showed them to proctors at examination centers.
The passing scores were then used to help people get jobs in public schools.