In traditional TES games, magics are cleanly cut into a consistent magic school system, e.g. Oblivion divide magics into Alteration, Conjuration, Destruction, Illusion, Mysticism, and Restoration. But ESO's magic system makes me confused, actually headache.

The most confusing thing is the destruction staff. Let me give just an example to show my point.

Well, all destruction spells SR penetration bonus, sounds great. But how about the sorceror's storm calling skill line, does skills in this skill line belong to destruction spells and thus the penetrating magic bonus applied ( I hope so).

Mage's Fury deals shock damage which is the same as shock destruction staff.

Logically speaking, the answer should be yes. But the fact that they belongs to different skill lines makes it questionable. I don't know is there any official info for this or a confirmed answer supported by in game test.