I’ve been reading The Scrum Fieldbook by J.J. Sutherland and have found it to be an excellent read.
One section of the book talks about performance reviews and provides questions for product owners, teams, leaders, and scrum masters.
Here are some questions for scrum masters:
Are they doing Scrum: three roles, five events, three artifacts, five values?
Is there a team working agreement?
Is velocity being measured?
Are they continuously learning?