You’re talking about Appalachian School of Law. See: http://en.wikipedia.org/wiki/Appalachian_School_of_Law_shooting and especially: Students subdued the shooter.
From Wikipedia:
On January 16, 2002, ASL Dean Anthony Sutin, Professor Thomas Blackwell, and 1L student Angela Dales were shot and killed by disgruntled student Peter Odighizuwa, 43, of Nigeria.
When Odighizuwa exited the building, he was subdued by two students armed with personal firearms.
At trial, Odighizuwa was found mentally competent, plead guilty to the murders to avoid the death penalty, and was sentenced to multiple life terms in prison.[6]
FreeRepublic member comes up with the information again.
Many Thanks