A Lexile® Range is based on a student's Lexile® Measure, which measures the student's reading ability level.
The range reaches from 100L below the Lexile® Measure to 50L above it. This range represents the boundaries between the easiest kind of reading material for the student and the level at which the student will be more challenged yet can still read successfully.
On reports that show students' Zone of Proximal Development (ZPD), if the Lexile® Range preference has been set to use Lexile® Ranges, the Lexile® Range will replace the ZPD.
Lexile® Ranges can be found on the following reports: