with the current rate of year over year increase of tuition by 6% - 20% ... I'ld hope you have a projected target savings of atleast 100,000 USD in 10 years for each one of your grand children ... and even then thats a shot in the wind hoping to hit something good!
Actually I think that tuition will decrease over the next 10 years. I am pretty sure that the private student loan industry is going to collapse in the next 5 years or so. Due to government enforced write-downs of existing loans, much tighter standards for lending etc.
Current market is completely out of control with college kids carrying debt that is impossible to pay off.
To a lessor degree I think there may be some backlash against state run lotteries, which will reduce funding that comes from these also.
Over the last 20 years or so I have watched tuition skyrocket due to all the easy money out there. If this disappears I expect tuition to go back to something reasonable. Plus all the fly by night for profit colleges will go away probably.