Mercy Sister Therese (Tarasia) Windham, 87, died Nov. 24 at Mercy Circle.

Sister Therese graduated from Mercy High School in Chicago in 1946 and worked as a sales clerk, typist and tutor before entering the Sisters of Mercy in 1952.

She earned a bachelor’s degree in chemistry from Saint Xavier University in 1957 and began teaching physics, chemistry, math and computer science, mostly in high schools and community colleges in Illinois and Wisconsin.

She earned master’s degrees in physics and computer science after starting her teaching career.

She also participated in the Bible study group at St. Linus Parish for five years.