CMcAboy
I don't know, I think nevermerlot has a good point. If the school is truly giving you an explicit condition, such as get a 600, then that should be all you need to do. From a logical perspective, he should skip it.
if [[ (core score) >= 600 ]]
then
Get into school
else
Don't get in
If they explicitly say a 600 will get you in no matter what, then there is no reason to waste your time with IR and AWA.
Just my $.02
We're totally all entitled to our own opinions -- and let's be honest, they are just that... opinions. But, too often, I get nervous that people approach/consider applications as a solely scientific process. While drones may be taking over the world day-by-day, they haven't made their way into the admissions offices of MBA schools yet! Skipping AWA/IR gives people a chance to say "Hmm... what's the deal here?" on a section that should never be more than a "Check.. scores fine... move along."
Good AWA/IR scores never get you 'in' to b-school, but bad AWA/IR scores can certainly cause your file to get put in the "Hmmm..." pile. That's not the pile you want your application to be in.
Just my thoughts.