Harvard has an endowment of $25 billion. They can afford a few rent-a-cops if they want to play around with redioactive materials.
As for other schools, they can foot some of the bill and the feds can pay the rest. That's money well spent, compared to bridges to nowhere, etc..
It's amazing that we allow these nuclear facilities to be wide-open targets for terorists. A half-dozen Islamic loonies with AKs could completely take over a facility, stack it with ammonium nitrate and blow it sky-high.