Obtain as many reading materials as possible about the field of sound engineering. Look for books, magazines, trade journals and websites about the history of sound engineering, techniques in sound engineering and sound technology trends.
Sketch out a list of topics and activities that could be used for a class. Include reference materials that can be used to support the list of topics.
Locate colleges, universities and trade schools that offer courses in sound or audio engineering. Larger colleges (two- or four-year) that have music departments will have courses in sound engineering. Many courses that cover topics in sound engineering are called sound design or sound production. Also, look at continuing education programs and professional organizations that offer classes.
Gain teaching experience by volunteering to speak at professional organizations and at related exhibits in your area or surrounding locations. Apply for a teaching job using relevant work experience in sound and music, along with a proposed syllabus of what you would teach. Also, consider applying for teaching at summer music camps for teens.