The overall expense of putting up to date equipment into these training institutions is another factor to why the cost is so high to run these institutions.
Universities have to have a lot more technical equipment to train students with these days..
The facilities themselves are much more expansive than what you would find in comparison to regular K-12 schools .
It may simply come down to cost, the governments are more pushed and concerned to support basic education and that alone is very expensive to financially support..