Possible Clues:

• Common B-school prerequisite
• Exam for some srs.
• GRE relative
• Bus. school candidate's exam
• Exam for a Wharton Sch. hopeful
• Exam for a Wharton applicant: Abbr.
• College sr.'s exam
• Admission req. for 24-Across
• Focus of a 2008 cheating scandal
• Common B-school requirement