The state of Illinois requires a substitute or short-term substitute license if you do not hold a valid Illinois Professional Education Licensure and a bachelor's degree.
Substitute or Short-term Substitute Licenses
Individuals can teach up to five consecutive days if they have an associate degree or higher from a regionally accredited college or university or at least 60 semester hours of coursework from a regionally accredited college or university are required.
Long-term substitutes who are contracted to teach up to 90 days must have a bachelor's degree or higher and be enrolled in an Illinois approved educator preparation program and have completed 90 semester hours of coursework.
Get all the details on how to apply for a substitute or short-term substitute license on isbe.net