I have been looking at the list of rectors of Eversholt church, Bedfordshire, from http://bedsarchivescat.bedford.gov.uk/Details/archive/110033099. The various people listed there are each described as one of: (with dates through which this description appears)
- clerk (1290-1702)
- priest (1331-1493)
- subdeacon (1227-1293)
- rector (1374-1680)
- capellanus (1420?-1507)
I'm guessing that BA, MA and BD are degree qualifications.
Were clerk, priest, subdeacon, rector, capellanus also forms of qualification? Or different job titles? How do these people differ? Does this indicate that they performed different jobs at Eversholt, or were these the jobs they had before they became rectors of Eversholt?