[Harp-L] truely advanced diatonic workshops?

[Jim Rossen <jimjimdr@xxxxxxxxx>]

The weekend and week long diatonic workshops I have attended have
"advanced' classes that are attended by both intermediate and advanced
players.  Most of the players are intermediate, so teaching is at an
intermediate level.  Do any programs take measures to assure that only
advanced players are in advanced workshops?  Seems like Joe Filisko
accomplishes this for weekly classes at Old Town School, but how about
others?

Jim R