From an article which detailed the findings of a Bloomberg survey regarding pre-enrollment salary of those attending top MBA programs in the US:
Stanford–students who attend Stanford’s GSB (MBA program) “typically” were earning about $124,000 per year prior to matriculating.
Harvard–$121,000
UPenn-Wharton–slightly over $116,000.
Chicago-Booth–$113,000
Northwestern-Kellogg–slightly over $110,000
Dartmouth-Tuck–$109,300
Columbia Business School–$108,000
UCal-Berkeley–$108,000
MIT-Sloan–$100,300
UCLA–$99,800
Virginia-Darden–$96,150
Cornell-Johnson–$96,150
NYU-Stern–$95,650
Michigan-Ross–$93,500
Vanderbilt–$90,150
Yale SOM–$88,800
UNC–$88,100
Rice-Jones–$87,500
U Washington-Foster–$87,000
USC-Marshall–$87,000
Duke-Fuqua–$86,555
CMU-Tepper–$86,500
Emory–$82,100
Georgetown–$82,000
Indiana-Kelley–$77,200
WashUStL–$76,250
Georgia Tech–$69,200
For those considering MBA programs, it is important to include 2 years of lost wages as part of the overall COA.