The opposite gender of a prior is a prioress. A prior is a male monastic superior, while a prioress is a female monastic superior.

The grades never transfer. When a course is transferred, the school applies the credits earned for that course and it satisfies the requirement for that course at the new institution. The grade is not transferred, nor the GPA. Thus, if you had a 3.5 GPA at the prior institution, you start a fresh GPA at the new institution.

They have no Super Bowl wins. They won 3 NFL Championships prior to the institution of the Super Bowl.

There is no antonym for the word priory.

Priory is a noun meaning, "an institution or house of men or women living under religious vows and headed by a prior or prioress.

There are probably library science degrees online that you can get, however not all institutions offer this program and you must check with the institution prior to enrolling.