According to the <a href="http://www.ed.gov/prog_info/SFA/StudentGuide/2002-3/index.html" target="_blank">Student Guide</a> from the U.S. Department of education the total amount of allowable outstanding Stafford loans for a professional student is $138,500.
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Generally, the total debt you can have outstanding from all Stafford Loans combined is
$23,000 as a dependent undergraduate student.
$46,000 as an independent undergraduate student (only $23,000 of this amount may be in subsidized loans).
$138,500 as a graduate or professional student (only $65,500 of this amount may be in subsidized loans). The graduate debt limit includes any Stafford Loans received for undergraduate study.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">