From the NCAA Umpire Evaluation Standards:
http://www1.ncaa.org/membership/cham...eval_standards
"Consistency of Strike Zone Throughout the Game
Maintains the same zone throughout the game and is the same for both teams from inning 1 to inning 9.
Has a grasp of how the zone can be adjusted in lopsided game. Note: Umpires "miss" pitches occasionally, just because an umpire calls a pitch that bounces a strike once does not mean that he should continue to call that pitch a strike in the name of consistency."
(Emphasis added)
I guess you can decide for yourself what "adjusted" means.
Walter