My divorce papers state that my ex husband is to "pay one-half of any college expense provided that the child enters a state operated accredited college and maintains a good grade average". He is only wanting to pay 1/2 of the remainder after grant monies and the one student loan that she has accepted has been applied. What is he supposed to pay according to Georgia law? I think he should pay 1/2 of total before any grant money, etc. is applied.