Some example numbers from a STAR reading assessment
Grade Equivalency: a score of 5.6 means a typical 5th grader during the 6month:
~This means the child scored around 50th percentile when compared to 5th graders, it does not mean that they got a high score on a 5th grade test. In fact it is possible for the inverse to be true if they scored on the lower side of 50
Instructional Reading Level: 4.9 is the level, in which STAR, recommended instruction because the child "is at least 80% proficient at recognizing words and comprehending reading material at this level."
Zone of Proximal Development: 3.8 - 5.8 this is the reading level zone that is recommended for the IRL 4.9 to maintain growth
My opinion is that G.E. is only useful for finding students who are falling below the average for their grade
I believe that proficiency scores are a much better tool to measure curriculum abilities.
If a 6yo can score an 80% on a 4th grade reading comprehension test, that child should be able to handle a 4th grade reading curriculum, not necessarily placed in a 4th grade class
