Ivy Leagues: Harvard, Yale, Princeton, Cornell, Columbia, Dartmouth, U Penn, Brown. If you are female you should include Barnard College - all women's part of Columbia, you get a Columbia University degree at the end.
Top Non-Ivies (they are equally/higher ranked than some of the Ivies): MIT, Duke, Stanford, Cal Tech, U of Chicago
"Public Ivies" UVa, UC Berkeley, UNC-Chapel Hill, UCLA. All tough to get into from out of state/country.
Top Universities: Johns Hopkins, Washington Uni in St. Louis, Rice, Emory, Northwestern, Vanderbilt, Tulane, William and Mary
Top Liberal Arts Colleges: Williams, Amherst, Pomona, Swarthmore, Wesleyan, Haverford
Those are all excellent universities. I'm sure it's added some confusion though!
Don't choose a university based on the economics course. In the US, undergraduate education quality is judged more by the university than by a particular course.