Inside California Southern University's largest research partnership: University of Southern California

Behind California Southern University's research output sits a defining relationship: 6,784 co-authored works with University of Southern California (United States) in the five years to 2025, the university's single largest collaboration.

It anchors an unusually connected research base: 900 collaborating institutions across 73 countries, producing 13,384 joint works over the window, with international co-authors on 31% of output.

The collaborative work travels: its field-weighted citation impact stands at 1.53, where the world average is 1.0.

The Research Collaboration Index, the first global account of how universities actually collaborate, publishes its first full edition on Tuesday 15 September at 09:00 UK.

Every figure derives from the open global research record and is checkable at source.