Blameless, faultless, as in Jean's conduct at school is beyond reproach. The phrase employs the verb to reproach in the sense of “censure or rebuke,” a usage dating from the early 1500s.

What is being beyond reproach?

: not calling for any criticism His actions were above/beyond reproach.

Is applicant integrity beyond reproach meaning?

(also above reproach) Such that no criticism can be made; perfect. 'his integrity is beyond reproach' 'Feeling, intonation, and expressiveness were all on par with the quality of the work itself, which is to say, completely beyond reproach. '