From 1986 to 1996 he spent his time as an associate professor at Queen's University.

He spent 1893-1894 as a professor at the University of Vermont.

Most of his career was spent as a professor at Vassar College.

He spent 34 years as a professor and adviser, the last 17 of which he was the department chair until his retirement in 1987.

His final two years were spent as a visiting professor at St. John's University.

He spent time as a professor at the University of Mississippi.

She spent several years as a professor in New York City.

Ward also spent 12 years as a professor of political law at Boston University.

Baillon spent his professional life as a professor of natural history, and he published numerous works on botany.

After graduating with a Master's degree, he spent a year teaching as a professor at the school.