What is the lexile score age10?

There's no single Lexile score that defines "age 10." Lexile measures are based on text complexity, not age. A 10-year-old's reading level can vary widely. Some 10-year-olds might read at a Lexile level of 600L, while others might be at 800L or higher, or lower. The appropriate Lexile range for a 10-year-old depends on their individual reading ability.