Last spring (March 2012), all bodies of elders in the US received a letter about higher education. It lays down the ground rules. Higher education is defined as a program of four years or more - not specialized certification or an Associates Degree.
The 'danger' of a four year education is that "it often erodes faith in Jehovah and the Bible."
Elders, ministerial servants and pioneers can be 'removed' if they pursue (and promote) higher education for themselves, their wives or their children.