Service as a graduation requirement

I am trying to find out how unique it is for a college or university to
require service for graduation.  A recent message went out about
this, but I did not see any actual overall numbers associated with the
replies.  Is there an organization (AAHE?) that would be able to
provide me this information?  I have looked at the recent OCC
survey, but I was looking for additional information.
Thank you.

Kristen Collier
Director of Community Service
Wittenberg University
P.O. Box 720
Springfield, Ohio 45501
kcollier@wittenberg.edu
phone- 937-327-7534
fax- 937-327-7442