Occupational instructors must have a bachelor's degree or equivalent occupational experience and 4000 hours of work experience in the appropriate field. Most instructors are certified at the provisional level upon entering the system. Instructors certified at the provisional level are ultimately working toward the standard certification within the WTCS which requires completion of seven education courses. The education courses must be completed at the rate of six credits per certifcation renewal period. The initial provisional certification period is three years.
Subsequent periods renew after two years until all education course requirements are completed.