In Austria almost all the big ski resorts they have schools and they include the option of freeride course, in addition most the mountain guide companies they include the option of freeride. I would recomend you to go the web of the ski resorts and check the section freeride they always have links to main school in each valley.
I write an example but most of the ski resorts webs they have section of freeride: this is in stubai and I have listen good things about it:
http://www.freeride.center/en/
Also it is interesting the opction of Pitztaler Gletscher:
https://www.pitztal.com/en/winter/ski-resorts/active-holidays/freeridi... and
http://winter.bergfuehrervereinigung-pitztal.com/tagestouren.html...
Other options are Sölden, Zillertal, St. Anton, Ischgl, and many more...
If you are interested in real courses of several days I recomend you
https://www.alpenverein.at/risk-fun/
But as I already said the options are endless, in every valley and big ski resort they have schools. So I would recomend you first to decide few areas that you like and after look for schools.
*message edited by elecas op 1 Oct 2019 17:23 (3% bewerkt)