There are no "specialization checks". You get a certain mana savings every time you cast, based on your spec skill level, and also on your SCM skill.

Basic Specialization Savings (for 50 and 200 spec):
50 = 3% savings EVERY TIME, no check performed
200 = 11% savings every time

SCM1, add 2% savings (5% or 13%)
SCM2, add 5% savings (8% or 16%)
SCM3, add 10% savings (13% or 21%)


Tatanka WolfDancer, 60th Druid
Snookims Whinzlow, 49th Enchanter
Silvara Drakonsbane, 48th Druid
Bigith Dwigus, 48th Warrior
7th Hammer