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</p>
<p>I’m not so sure it’s just about cost. If you compare the yields of the state flagships (and some “second” or quasi-flagships) you find enormous variation, ranging from an HYPS-like high of 70.5% at the University of Nebraska to a low of 18.6% at the University of Vermont. I very much doubt that price accounts for this variation. Nor does the perceived quality or selectivity of the public institution. UNC Chapel Hill and UVA, two of the top public flagships, rank near the top of the publics, with yields of 55.4% and 51.7% respectively. William & Mary, UCLA, and UC Berkeley, all highly regarded publics, rank toward the bottom of the publics in yield. Other top publics like Michigan, Wisconsin, Georgia Tech, UIUC, and U Washington rank right in the middle.</p>
<p>I think publics are generally just competing in a very different market than the elite privates, and that local and regional variations in cultural norms matter a great deal. In Nebraska, North Dakota, Florida, Nevada, New Mexico, North Carolina, Louisiana, Oklahoma, and other states—many of them in the Great Plains, Southeast, and Mountain West—it’s pretty much the norm to go to the State U if you get in. In the Northeast (VT, NY, MA, RI, CT, DE, NH, PA) it appears most people use their state flagship as “safety of last resort”—if they have other options (and most apparently do), they go elsewhere.</p>
<p>State flagships/quasi-flagships, ranked by yield:</p>
<ol>
<li>U Nebraska 70.5</li>
<li>U North Dakota 69.3</li>
<li>U Florida 62.9</li>
<li>U Nevada-Reno 57.6</li>
<li>U New Mexico 57.5</li>
<li>UNC Chapel Hill 55.4</li>
<li>LSU 55.1</li>
<li>Oklahoma State 54.9</li>
<li>UNLV: 54.7</li>
<li>UT Austin 53.8</li>
<li>U Alaska 53.4 </li>
<li>Mississippi State 53.2</li>
<li>UVA 51.7</li>
<li>U Kentucky 51.0</li>
<li>U Wyoming 51.0</li>
<li>U Georgia 50.8</li>
<li>Ohio State 50.5</li>
<li>Kansas State 50.2</li>
<li>U Oklahoma 49.3</li>
<li>U Alabama 49.2</li>
<li>U Missouri 47.4</li>
<li>U Tennessee 47.4</li>
<li>U Idaho 46.3</li>
<li>U Arkansas 46.0 </li>
<li>U Washington 45.6</li>
<li>UIUC 45.2</li>
<li>U Montana 43.6</li>
<li>U Michigan 43.1</li>
<li>Georgia Tech 42.9</li>
<li>Wisconsin-Madison 42.8</li>
<li>Oregon State 42.4</li>
<li>U Kansas 42.2</li>
<li>Washington State 41.7</li>
<li>U South Carolina 41.5</li>
<li>Michigan State 41.1</li>
<li>U Hawaii 40.8</li>
<li>U Utah 40.7</li>
<li>UC Berkeley 40.1</li>
<li>WVU 38.3 </li>
<li>UCLA 37.7 </li>
<li>U Arizona 37.1</li>
<li>U Maryland 37.0</li>
<li>U Mississippi 36.8</li>
<li>William & Mary 36.8</li>
<li>U South Dakota 36.8</li>
<li>Arizona State 36.2 </li>
<li>U Oregon 35.7</li>
<li>U Minnesota 35.5</li>
<li>Indiana U 35.4</li>
<li>U Iowa 34.8</li>
<li>Rutgers 34.7</li>
<li>U Colorado 34.1</li>
<li>U Maine 34.1</li>
<li>Auburn 33.8</li>
<li>Purdue 33.7</li>
<li>Penn State 32.2</li>
<li>UNH 31.1</li>
<li>UConn 30.5</li>
<li>U Delaware 30.8</li>
<li>URI 27.9</li>
<li>SUNY Stony Brook 26.6</li>
<li>UMass Amherst 24.0</li>
<li>SUNY Binghamton 22.6</li>
<li>U Vermont 18.6</li>
</ol>