There are many ways to assess the reading level of a book, and each publisher uses their own scales of measure and adapts the original text differently, which is why you will see different Lexile and CEFR benchmarks ( Common European Framework for the Reference of Languages) for the same title.
However, although it is not precise, a level is a good general indicator of the possibility suitability of a book for a student.
Framework for the Reference
|Lexile||Headword ( Pearson Publisher’s Chart)|
|Total Beginner||A1||0-180L||up to 100|
|High Beginner||A2||180L-600L||up to 300|
|Low Intermediate||A2/B1||700L -800L||up to 1200|
|Intermediate ( mid intermediate)||B1-||850L -1000L||up to 1700|
|High Intermediate||B1+||1000L to 1250L||up to 2300|
|Advanced||C1||1250L to 1400L||up to 3000|
|High Advanced (native speaking level – university level)||C2||1400L-1595L||3000+|
Click here to see a chart showing lexile by grade level for native English speakers.
Generally, students who have been attending a bilingual school will have an English language level that is two years behind a native English speaking student.