15 ILCS 410/10b.17

For trainee programs and for the appointment of persons to positions in trainee programs, hereinafter called "trainee appointments". Trainee appointments may be made with or without examination, but may not be made to positions in any class that is not in a trainee program approved by the Director. Persons who receive trainee appointments do not acquire any rights under jurisdiction B of the Merit Employment Code by virtue of their appointments.