Since its founding, the Mississippi Valley Conference was a league composed of metropolitan schools in eastern Iowa. Until 1969, the MVC (as it is known to some locals) also included Quad-City area schools in both Iowa "and" Illinois; this list included Davenport High (since 1960, Davenport Central) and Davenport West in Iowa; and Illinois Quad-City area schools East Moline (now United Township), Moline and Rock Island. Clinton High School was also a member of the conference, as were Jefferson and Washington of Cedar Rapids, Iowa City High and Dubuque Senior (known for years simply as Dubuque). Cedar Rapids Kennedy joined immediately upon its opening in 1967.