It's a mixed bag. The reality is that institutions of higher learning in VA tend to spend a good deal more than those in other (nearby) states, thus the higher overall costs (VA = $7700/NC = $3482 2012) We're also screwed by our debt service (one of only a handful of States w/T&F going to debt service in 2012).
For the real story, go here:
http://www.sheeo.org/sites/default/files/publications/SHEF-FY12.pdf