Dean's List:
SQPR of at least 3.4
An A or B in Conduct
An A or B in Aptitude
A C or better in PE
A C or better on the PRT
Commandant's List:
SQPR of at least 2.9
An A in Conduct
An A or B in Aptitude
An A or B in PE
An A or B on the PRT
Superintendent's List:
SQPR of at least 3.4
An A in Conduct
An A in Aptitude
An A or B in PE
An A or B on the PRT
How is aptitude graded?
Aptitude is a culmination of upperclass, company officer, and peer rankings at the end of every semester.
I think grades in professional courses (i.e. Seamanship) are also factored into "Aptitude".