The phrase "performance levels" refers to the measurement or evaluation of how well someone or something is performing or accomplishing a task or goal. Full definition
For starters, you should know that there could possibly be very insignificant differences in performance levels of the two. (nashvillechatterclass.com)
He would do well to retain such a high performance level in the future games. (anfieldindex.com)
Each of the classroom - observation instruments proposes an incomplete but discrete set of competencies for effective teaching and provides a description of differing performance levels for each competency. (educationnext.org)