As you read the title of this post, you might wonder what exactly is a Lexile measure. I can help with this!
The Purpose of Lexile Measurements are:
- To assess the reading difficulty of texts
- To assess student’s ranges of reading comprehension
- To predict how well a student is likely to comprehend a particular text
If a student’s Lexile score and a textbook’s Lexile are the same (or very close to the same), you can expect the student to read and comprehend 75% of the material presented.
What is a Lexile and how is it determined?
A Lexile measure is an indicator of how difficult a text is to comprehend based upon:
- Word Frequency (not frequency in passage but in English language)
- Sentence length (best predictor of the difficulty of a sentence is its length)
What doesn’t a Lexile measure?
- Content
- Quality
- Complexity (syntax, irony, symbolism, etc.)
- Jargon
- Interest
- Design
What comprehension skills are tested?
- Paraphrase information in passage
- Drawing conclusions from a passage
- Making inferences
- Identifying supporting details
- Making generalizations from passage
The data for the class of 2015, 2014, 2013 are presented in the links below:
9th Grade Proficiency Summary Report
10th Grade Proficiencey Summary Report
11th Grade Proficiencey Summary Report
A quick synopsis of the data informs us that 71% of our students assessed in these cohorts are reading at the proficient of advanced levels based on the Lexile measure. The chart below will provide you with information on the percentile rank of readers by Lexile measure:
As we move to the Common Core State Standards, the current Lexile ranges (also called bands) will be “stretched” to align with the associated rigor increases. Grades 9 & 10 have been linked as seen below:
Current Proficiency Lexile Band “Stretch” Lexile Band
9th & 10th: 960-1115 9th & 10th: 1080 – 1305
11th: 1070 – 1220 11th: 1215 – 1355
The Common Core Standards advocate a “staircase” of increasing text complexity, beginning in grade 2, so that students can develop their reading skills and apply them to more difficult texts. At the lowest grade in each band, students focus on reading texts within that text complexity band. In the subsequent grade or grades within a band, students must “stretch” to read a certain proportion of texts from the next higher text complexity band. This pattern repeats itself throughout the grades so that students can both build on earlier literacy gains and challenge themselves with texts at a higher complexity level.
