Yes, I am in Lairshaper school. Even applying stuff I am not yet optimum with, I get no xp. I only get xp making the items.
Same thing is happening to Wyrme. Probably others as well. My lair is in Heart, Wyrmes is in Dralk now I think.
EDIT: I would like to get the lost xp from the 100 Strong Excoriations I applied.