Perhaps in a prison library being a tough guy was as much a professional credential as a degree.

Students seeking the highest qualifications in finance at Oxford University will be able to combine academic studies with preparation for a professional credential.

For middle-class Scots, education was more than just a means to professional credentials or social advancement.

The city's position in defending the warrant has been to attack the professional credentials of the student.

Liam has professional credentials... degrees from Trinity and Oxford, publications in magazines... a Facebook page, for goodness' sake.

Even his critics admit he has excellent professional credentials, an affable personality, and no bombshell decisions on the bench.

It also requires preparers, especially those without other professional credentials, to pass competency tests and take classes to maintain their IRS registration.