Education in Middle Earth

[Kitanna]

Hobbits (the lean ones, excluding Bombur of course!) could also run at a good pace

That implies you were referring to Bombur as a hobbit not a dwarf. There's no need to get upset because what you typed was unclear.

Edit: Morthoron seems to have said better what I was going for.

Being a secret race we have little information about them, my guess is that the lower ranking families and their sons worked in the mines while some ascended to jewel crafting or making "magical toys" like we saw at Bilbo's birthday party.

So dwarves rose as a sort of middle-class society of Middle-Earth? This is of course assuming there was a chance for social mobility among dwarves. If there was such a chance then education would have become pretty important for dwarves that weren't in the aristocracy.