<p>I checked the National Academies of Science and Engineering member directories and pulled some university faculty membership numbers...Here's the data (I think the database hasn't been updated with new members announced this year).</p>
<p>Institution, # NAS members, # NAE members, total, PA score
MIT, 105, 110, 215, 4.9
Stanford, 126, 87, 213, 4.9
Berkeley, 128, 75, 203, 4.8
Harvard, 150, 18, 168, 4.9
Caltech, 73, 30, 103, 4.7
Princeton, 71, 21, 92, 4.9
Wisconsin, 44, 18, 62, 4.1
UCLA, 28, 17, 45, 4.2
Michigan, 19, 22, 41, 4.5
U Chicago, 38, 1, 39, 4.6
USC, 10, 19, 29, 4.0
WUSTL, 16, 3, 19, 4.1
Rice, 3, 12, 15, 4.0
Vanderbilt, 4, 1, 5, 4.0
Emory, 2, 0, 2, 4.0
Notre Dame, 0, 2, 2, 3.9
Georgetown, 0, 0, 0, 4.0</p>