Mastersdegree

2 clues
Postgraduate pursuit
What hangs next to Johnson's credentials?
Similar answers:
Artsdegree
Astasmaster
Bachelorsdegree
Bandmaster
Batmasterson
Bedpostmasterkeychain
Beforethemasters
Bellboyscoutmasterkey
Blastermaster
Bsdegrees
Bushmaster
Chessmaster
Chinamastery
Choirmaster
Cluemastermind
Coldmastery
Concertmasters
Ddsdegree
Dillmaster
Donamechessmaster