None of you seem to know what wealth is.
Wealth is not a dollar amount in a bank account, nor is it a deed to a property, nor the size of your paycheck.
Wealth is the goods and services that you can enjoy. Money is a means to that end, but when comparing percentages of money between different pools (such as between different countries) you cannot possibly be comparing wealth in any way at all, because money percentages are even more removed from wealth than money itself is.
Americans are doing quite fine in the wealth department. The vast majority of Americans enjoy levels of goods and services that are the envy of most of the world. 5% this, 11% that, 20% whatever, 44% blah blah... meaningless crap that does not relate to wealth at all.
With the looming trillion dollar student loan bubble, it is quite clear that Americans are not going without access to the higher education services, that quite the contrary there is evidence that too many are partaking in the service to the detriment of us all.