reading grade level (RGL)
A number representing a person's ability to read and comprehend what they are reading, equating to a given level of schooling in which a student should be capable of reading and comprehending the written matter (i.e., a RGL of 7 is representative of an individual being able to read and comprehend 7th grade subject matter). A number representing the school grade level assigned to the complexity of reading materials. Formulas used to calculate reading grade level are usually based on length of words and sentences.