I personally think the more windy it is for a trainer, the more expirience you will get, therefore, have more confidence in your next plane. (under windy conditions of course) It's prolly not a bad thing to fly in wind. Yeah, 15mph winds are just a little much for me, but I solo'ed in 12mph winds It really gets interesting when you have crosswinds when you are piloting a trainer.

G'day

Joe