Complex sentence: He is a proponent of sex education as a means to promote consensuality and safety, educating adults of all ages, including in 2011 as a guest presenter for a college level human sexuality class at Northwestern University.
Split into simpler sentences: He is a proponent of sex education as a means to promote consensuality and safety. His vast experience of adult education on the topic includes in 2011 as a guest presenter for a college level human sexuality class at Northwestern University.