I think St. Norbert is a different matter and certainly a case study that private New England schools should study.
But the UW system has dominated DIII athletics across sports. Off the top of my head, UW-Whitewater has won 6 national titles in football the past decade, along with titles in baseball, basketball, and rugby. UWSP has won titles in hockey and basketball. Eau Claire has won in hockey. Oshkosh hasn't won a title but played for a title in football last year, and made it to the semifinals this year (which in the DIII football landscape, dominated by two teams, is quite the accomplishment).
Not really sure the reason the Wisconsin state schools do so well (might have something to do with them being larger, public schools), but I don't think they're places that small, private, liberal arts schools can look to for a blueprint.
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