Participants in a graduate program must maintain a 3.000 GPA (B average). George Mason allows 6 credits of C grades for graduation with a master's degree.
Up to 12 credits for the master's degree may be transferred from another accredited institution with the approval of the program coordinator. Credits must be less than six years old, at the graduate level, and graded (grade of B or better, no pass/fail, audit, school district professional development courses, etc.)
Rates are available at http://fiscal.gmu.edu/Resources/tuition_rates.htm.