Ms. Stryker received her bachelor's degree in special education from the University of Northern Colorado in 1976 and earned her master's degree in special education leadership from Western Michigan University in 1982. After graduation, Ms. Stryker taught in the special education department of the Kalamazoo Public Schools. While earning her master's degree, Ms. Stryker was an intern at Starr Commonwealth, a residential treatment center for boys in Michigan.
After her graduate program, she became a Program Director for the Kalamazoo Intermediate School District's Special Education Department. Ms. Stryker is also a Director of Stryker Corporation, Vice Chairman and Director of Greenleaf Trust, a Michigan Chartered Bank, Vice Chair of the Kalamazoo Community Foundation, and a member of the Michigan Women's Commissioner. She is a trustee at Kalamazoo College, in Michigan and Spelman College located in Atlanta and the Kalamazoo Juvenile Home Foundation.
In addition to Corporate Director and non-profit leadership roles, Ms. Stryker is an accomplished calligraphy artist and photographer. She is an avid downhill skier and is a passionate fan of her children's lives and academic endeavors. Ms. Stryker resides in Portage, Michigan with her husband of 27 years, William D. Johnston, and their three children, Michael, Megan, and Annie.