Roger,

In the north east I would recommend the oyster bay sailing school.
Although all the classes here are finished for the season, they have a
class they run in the BVI in January.

In the San Francisco area I highly recommend
http://www.clubnautique.net/ . In addition to being an excellent
school, its cheap to get their via jetblue into oakland airport (10
minutes from Club Nautique's base)

Dan