You are missing the forest for the trees. Quality wise, most American first and second tier universities provide largely similar levels of undergraduate educati

You are missing the forest for the trees. Quality wise, most American first and second tier universities provide largely similar levels of undergraduate education, with perhaps slightly differing rigor depending on the institution. The top 10 schools are uniquely able to provide strong networks, money, and access to opportunities that are not available to everyone else. That has very little to do with research output or its academic strength. You cannot buy old money. If academic rigor is the sole determinant of institution quality, then continental powerhouses like École Normale Supérieur and Science Po would be ranked on the same level as Stanford and Harvard.