converting human paragon - how to make a skill always a class skill

[Mathias]

Can you think of any NPC classes that select from among lots of skills, and make that skill a class skill?

On the Class Special tab, using the "New (Copy)" button, can you find that ability, and look at its script?

(P.S. Don't forget to delete it once you're done studying that copy, or you'll get an error message about invalid unique Ids).

Remember - the way class skills work changed from d20 to Pathfinder - there's no longer a difference between making a skill a class skill for one class or making a skill a class skill for all classes.