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SIU campus lake in the fall

For students interested in applying, but who do not have a CDS Bachelor's degree, a leveling course sequence is available to obtain prerequisites. The CDS leveling courses are available entirely online. The online course sequence provides maximum flexibility for students to complete up to 24 credit hours of foundational content in communication disorders and sciences.

Please see our FAQ below on the leveling courses. Courses are each offered once per year in the online format. Contact academic program director Valerie Boyer for additional information at

Course tuition is based on the tuition for online courses that can be found on the Extended Campus webpage for Cost and Aid. Scholarships through extended campus can also be found on this webpage. Additional financial questions about the leveling courses should be directed to the SIU Financial Aid Office.

After you complete the leveling program, you will need to apply for admission to the Graduate Program in the Fall semester.

List of leveling courses SIU students need to take

Leveling Courses by Semester
Fall Spring

CDS 300: Phonetics

CDS 301: Speech and Hearing Science

CDS 303: Language Development

CDS 302: Voice and Articulation

CDS 314: Anatomy & Physiology of the Speech and Hearing Mechanism 

CDS 410: Multicultural Communication

CDS 328: CDS and the Classroom Teacher

CDS 420: Audiological Disorders

Frequently Asked Questions (FAQ) for Prerequisite Courses in Communication Disorders and Sciences: