He said he occasionally taught at community colleges but received most of his income from teaching English as a second language.

The script is little known nowadays but occasionally taught at schools.

Now he does little else but write and occasionally teach.

Some stars teach only occasionally, others mainly graduate students or small seminars.

He occasionally taught French for a living, while devoting himself to writing.

Many members occasionally teach both undergraduate and graduate level university courses in photobiology.

He took emeritus status at Harvard in 1985 and continued to teach there occasionally.

In later life, he occasionally taught at University of Central Florida.

In addition to his media work, he occasionally teaches football team management seminars.

He continued to teach occasionally at University College until 2006, more than twenty years after retiring.