"Assuming" that it's OK to place a geocache anywhere is never a good practice. You should always seek permission. If you want to place a geocache on the campus of UCA, I recommend that you contact the Campus Police first and get their approval, or follow their guidance if you need to go elsewhere through the school administration.
"Wildness is a necessity." -- John Muir
"When you go to hide a geocache, think of the reason you are bringing people to that spot. If the only reason is for the geocache, then find a better spot." – briansnat