The first key will give students the strong foundation they will need for all learning that follows. In the early grades, students read and comprehend levels of text that vary in difficulty. In kindergarten students who can read Level 6 books by the end of the year are reading at advanced levels. By the end of 1st grade, students should be reading Level 16 books. In 2nd grade, students who score in the 70th percentile or higher on the reading section of a national test called the TerraNova 2 are reading at advanced levels. Scoring at the 70th percentile means that they perform better than 70% of students nationwide.