俺觉得forbes的排名比较靠谱。。。

RANK	NAME	STATE	NET PRICE
1	Harvard University	MA	$14,327
2	Stanford University	CA	$13,261
3	Yale University	CT	$18,627
4	Massachusetts Institute of Technology	MA	$20,771
5	Princeton University	NJ	$9,327
6	University of Pennsylvania	PA	$24,242
7	Brown University	RI	$30,205
8	California Institute of Technology	CA	$24,245
9	Duke University	NC	$35,737
10	Dartmouth College	NH	$30,421
11	Cornell University	NY	$31,230
12	Pomona College	CA	$15,840
13	University of California, Berkeley	CA	$15,859
14	Columbia University	NY	$24,231
15	Georgetown University	DC	$30,107
16	University of Chicago	IL	$25,455
17	Northwestern University	IL	$24,047
18	University of Notre Dame	IN	$28,768
19	Williams College	MA	$22,667
20	University of Michigan, Ann Arbor	MI