What is the difference in these 2 schools of Vipassana meditation


Vipassana Meditation As Taught By S. N. Goenka and his Assistant
Teachers in the tradition of Sayagyi U Ba Khin 
(http://www.dhamma.org)

and

Vipassana as taught by Jack Kornfield

Just a very brief summary will do.

Thanx in advnce,

The most common problem with many so called Buddhist teachers in the
West is that either they are not real teachers, i.e they aren't
authorized to do what they're doing because they don't have a proper
dharma transmion, or that what they teach is in clear contradisction
to Budha's teaching. I'm reffering here to all Buddhist tradions in
the West. Some of the most famous American Vipasana teachers do NOT
have a dharma transmition. I would suggest carefull considaration od
these matters. As far as Jack Kornfield is concerned I have no clue.
About 10 years ago I went to a reatret in a Ven. Goenka center
somwhere in MA. It was a good reatret and have not heard of any bad
things or scandal ralated to Ven Goenka. However, everyone must judge
for themselves.
If you are truly interested in parcticing vipasana as a buddhist path
I suggets carefull reasearch and travelling to the original Buddist
countries.
I wish you all the best,