Here is a list of top 15 (business) schools in the US.

1. STANFORD UNIVERSITY (GSB)
2. MASSACHUSETTS INST. OF TECHNOLOGY (Sloan) PhD program
3. HARVARD UNIVERSITY (HBS)
4. UNIVERSITY OF PENNSYLVANIA (Wharton)
5. NORTHWESTERN UNIVERSITY (Kellog)
6. UNIVERSITY OF CHICAGO
7. DARTMOUTH COLLEGE (Tuck) (N.H.)
8. UNIVERSITY OF MICHIGAN AT ANN ARBOR
9. DUKE UNIVERSITY (Fuqua) (N.C.)
10. UNIV. OF CALIFORNIA AT LOS ANGELES (Anderson)
11. COLUMBIA UNIVERSITY (N.Y.)
12. UNIVERSITY OF CALIFORNIA AT BERKELEY (Haas)
13. UNIVERSITY OF VIRGINIA (Darden)
14. CARNEGIE MELLON UNIVERSITY (GSIA) PHD program
15. CORNELL UNIVERSITY (Johnson) (N.Y.)

Tips to succeed in getting into one of the above schools :

• Good GMAT score ( > 700 to be safe ) see Kaplan or Princeton Review to jack up your score.
• Strong Recommendation Letters (for Harvard especially)
• At least two years of experience (management experience is better)
• Good Essays