$25K over 4 years is not really that much money.
Assume a parent starts putting aside $270/month at the beginning of the child's freshman year in HS.
By month 93 (Final senior year payment) the account would be over $25K.
The account would have been spent down by then, but close enough to get to the finish.
Just so you know I am not blowing smoke, I paid for Bachelor degrees for my kids this way.
I would hope states return to funding colleges better, as they are good for the economy.
Back when I was involved with such things, the State could expect $33 in higher taxes
for each $1 spent on Higher ed, within 5 years of graduation.
People who make more, pay more taxes.