What you should do then, (and I don't know that this will work), is to suggest your organization data using the Schema.org code; and specify your main campuses Google+ (verified business) page in the sameAs.

You can read more about doing that at https://developers.google.com/structured-data/customize/soci...

While I can't guarantee or even believe whole heartedly it'll work, it will at least suggest to the google crawler what the true information should be.

It may also be helpful to embed corporate contact information using a similar process: https://developers.google.com/structured-data/customize/cont...

Are you willing to reveal the campus just so that I can see or no because privacy concerns?