Lexile text measures can range from below 0L to above 1600L. When a text measure is below 0L, a BR (Beginning Reader) code is reported. These Lexile measures are shown as BR followed by a number and L (e.g., BR150L). The Lexile scale is like a thermometer. Numbers below zero indicate the decreasing text difficulty as the number descends from zero. Like negative numbers, the “larger” the number following the BR code, the less challenging the text. For example, a BR100L book is more complex than a BR300L book. Similarly, a student reading at BR100L is more advanced than a student reading at BR300L. Above 0L, measures indicate increasing text complexity as the numbers increase. For example, a 300L book is more challenging than a 100L book.