caliber
n. C / Un. the quality or level of someone's ability or something's excellence. You use it to describe how impressive or skilled a person or thing is.
n. the quality of someone's character or the level of their ability; the standard reached by something. Often used in professional or evaluative contexts to measure merit.
The school attracts students of a very high caliber.
The company is looking for a manager of your caliber to lead the new international department.
While the script was mediocre, the high caliber of the acting transformed the play into a compelling and memorable experience for the audience.
Often paired with the preposition 'of' ('of a high caliber'). The spelling 'caliber' is standard in American English, while 'calibre' is used in British English.