MARSHALL - Jamie Bjerke and Jason MacKinnon announce their engagement. Parents of the couple are Ron Bjerke and Marilyn and Monte Robinson of Milbank, S.D., and Dan and Judy MacKinnon of River Falls, Wis. Bjerke is a 2004 graduate of Milbank High School and a 2008 graduate of Southwest Minnesota State University. She graduated with an elementary education degree with a pre-primary specialty. She is employed at Canby Elementary School as a preschool teacher. MacKinnon is a 2000 graduate of River Falls High School and a 2006 graduate of Southwest Minnesota State University. He graduated with a computer science degree. He is a systems developer at The Schwan Food Co. The couple plans a July 30, 2011, wedding at American Lutheran Church in Milbank. A dance will follow at Speedway Event Center.