:</strong> rank in h.s. class</p></li>
<li><p><strong>id:</strong> student identifier</p></li>
<li><p><strong>spring:</strong> =1 if spring term</p></li>
<li><p><strong>female:</strong> =1 if female</p></li>
<li><p><strong>black:</strong> =1 if black</p></li>
<li><p><strong>white:</strong> =1 if white</p></li>
<li><p><strong>ctrmgpa:</strong> change in trmgpa</p></li>
<li><p><strong>ctothrs:</strong> change in total hours</p></li>
<li><p><strong>ccrsgpa:</strong> change in crsgpa</p></li>
<li><p><strong>ccr