Ice and Life, Death Fire and Life, Ice Storm with Life, Ice, Death Balance with Ice, Death, Myth Myth with Ice, Life Life with Death, Ice Death with Ice
Don't train all the spells in the secondary school, only up to the spell you need.
For example, train Ice for Tower Shield, Life for Satyr, and Death for Feint. Don't train the entire school, that is a waste of training points. Higher levels almost never use their secondary offensively. For balance, training up to Humongofrog for the minion killing only!
Additional School Pairings: Myth (up to Earthquake), Balance (for Weakness), and Fire (for Fire Elf)
Ice and Life, Death Fire and Life, Ice Storm with Life, Ice, Death Balance with Ice, Death, Myth Myth with Ice, Life Life with Death, Ice Death with Ice
Don't train all the spells in the secondary school, only up to the spell you need.
For example, train Ice for Tower Shield, Life for Satyr, and Death for Feint. Don't train the entire school, that is a waste of training points. Higher levels almost never use their secondary offensively. For balance, training up to Humongofrog for the minion killing only!
Additional School Pairings: Myth (up to Earthquake), Balance (for Weakness), and Fire (for Fire Elf)
I hate to tell you this, but I'm talking about pairings with friends, not secondary schools :(
Well my friend and I did a death and ice walk through, (I was ice, my friend is death) and it worked out well and we just beat Malistare. I think it's a good pair
a few friends and I did life/death previously, and one friend who goes with me currently is running a storm with my myth. A good team up of schools is one where you can fill in for their deficiencies and them you.
storm and 
life from my questing experiences.
and 
is a great team, and im not just saying it cause im ice lol. 