Rats, you mean I paid full price for Tiger?
Perhaps not. Since your wife works for UH and you have a school aged child, you may have paid the Student/Educator price.
AFAIK, a student/educator price for Leopard has yet to be announced. Still, I think it is likely.
I got a lucky break as I will be on a university faculty when OS 10.5 comes out. I don't know what the student/educator discount is but, knowing Apple it won't be much.
MamaMoose
I've generally found the discount to be quite comparable to that offered by Mac Mall and other catalog houses. But, being close to an Apple Store makes buying there my preference due to additional service being available, such as transferring files.