I second the advice to go to France and fly at St. Auban. Very good
instructors. A fleet of sailplanes that can't be beat. Ridge soaring
for just about any wind.
Most people speak pretty good english. The costs are very reasonable.

I have been to St. Auban five times. Most days begin with thermals on
the ridges. As the surrounding mountains heat up and the local winds
pick up you fly the bulk of the day in mixed thermals and ridge
soaring. At the end of most days it is was primarily ridge soaring.
Actually, many of the ridges are limestone cliffs. It is great fun at
many locations to cruise the length of the ridge gaining altitude
until you top out at one end of the ridge. Then you do a 180, pull
the airbrakes and blow off all of your altitude as you run to the
other end of the ridge. Then you close the airbrakes, turn back into
the face of the ridge and scream back along the face gaining altitude
at 100kts. Then do it again. One day you do it in a Janus, the next
in a Discus 2, then an LS-8, then a Nimbus, then an LS-4, then an
ASW-24, and so on. How can you get bored?

That's my vote.

Guy