From the US Census bureau, list of 70 cities above 250K in population and the percentage of citizens with college & HS degrees:

http://www.newsok.com/article/1812075/?template=home/main

City College HS
San Francisco 51 84
Seattle 51 90
Raleigh 50 91
Washington 48 84
Austin 45 84
Atlanta 43 82
Boston 41 85
Minneapolis 41 89
Lexington 39 87
San Diego 39 85
Oakland 38 80
Portland 38 88
Charlotte 37 84
San Jose 37 83
Denver 36 82
Cincinnati 34 83
Co. Springs 34 91
Honolulu 34 86
Pittsburgh 34 87
St. Paul 34 87
Va. Beach 34 93
Anchorage 33 92
Nashville 33 85
Columbus 32 87
New York 32 78
New Orleans 31 82
Albuquerque 30 86
Chicago 30 77
Tampa 30 81
Tulsa 30 85
Arlington 29 88
Dallas 29 71
Los Angeles 29 70
Omaha, Neb. 29 87
Long Beach 28 75
Oklahoma City 28 82
Houston 27 72
Sacramento 27 77
St. Louis 27 79
St. Petersburg 27 86
U.S. 27 84
Indianapolis 26 84
Kansas City 26 87
Fort Worth 25 77
Phoenix 25 81
Aurora 24 82
Baltimore 24 74
Mesa 24 86
San Antonio 24 78
Tucson 24 82
Wichita 24 85
Anaheim 23 76
Jacksonville 23 89
Memphis 23 81
El Paso 22 70
Louisville 22 81
Fresno 21 77
Corpus Christi 20 79
Miami 20 63
Milwaukee 20 79
Philadelphia 20 77
Riverside 20 76
Buffalo 18 81
Las Vegas 18 81
Toledo 18 83
Bakersfield 16 78
Stockton 16 72
Cleveland 14 77
Detroit 11 73
Newark 10 66
Santa Ana 8 51