If you're a beginner like me (ski/snowboard), I think is not possible not learning how to do this in Sölden.
The school cost 149 Euro (4 days), or about 250 Euro if you need equipment too (I'm not sure).
Now, you have two options:
1. to learn on the same track with your friends (track 13 from Giggijoch), but in this case you also have to pay normal skipass. (in February, 230 Euro/5 days)
2. to learn down on track 50, just for beginners. In this case you have to pay a special skipass just for that track 10 Euro/day, is not valid on some other tracks.
I choose the second option and after 4 days ski school I downhill together with my friends on red tracks. (blue is for beginners, red is medium, black is difficult)
I met some guys who were able to go on black tracks after few days, but this depends on you and the group.