<p>Is there a common application for graduate school?</p>
<p>No. </p>
<p>That said, a lot of schools use “apply yourself” (and another service I’ve forgotten the name of) and depending on how the school has things set up, some of your data will transfer auto-magically.</p>
It seems, there is one coming up at http://www.mygradapp.org
Some fields have one. For example, SOPHAS is the central application system for MPH programs at many schools of public health. Most schools belong - but not every one.