The skills that can presently be trained are limited by the NPC\'s abilities. If you want to train higher, you\'ll need to find an NPC with better skills.
NPC limitations on training skills will stay. They will, however, be greatly varied in their limitations.
(Ex: a lowly city guard may only train low levels of Sword, while a remotely hidden Master may train to very high levels. Challenge in finding trainers should equal possible gains.)