"Proficiency levels" refers to how well someone can perform a particular skill or task. It indicates the degree of skill or competence a person has in a specific area. Full definition
The most recent statistics on these students indicate that there is a significant drop in reading proficiency levels in grades 7 - 12. (thoughtco.com)
Both of the above - mentioned options provide more information about the average proficiency level of a school than an aggregate proficiency rate. (morganpolikoff.com)
There are numerous standardized tests used to predict student proficiency levels on the state test. (allthingsassessment.info)