Both Uses

discredit
in
The Lords of Discipline
(Edited)

He claimed that The Ten, if there is such a thing, and again, he had no more proof than any of the others, had vowed that the Institute would never graduate a woman or any man who would bring discredit on the school because of gross mental or physical peculiarities, which is rather humorous in the light of recent history.
Chpt 3.27

discredit = damage the reputation of
You'll be kicked out of school for lying and for reflecting discredit on the Institute.
Chpt 4.39 *

discredit = damage to the reputation

Definitions:

(1) (discredit)
damage the reputation of -- often causing distrust of or disbelief in
(2) (meaning too rare to warrant focus)