Some teachers might even wonder if the re-reading is not a waste of valuable time when there is so much ground to be covered throughout the school year. Understanding why kids need to read text a number of times is most important. They re-read material to develop fluency. It's all in the practice as children become more familiar with the text and as they pay less and less attention to decoding. They re-read material to allow students to apply different skills to the same text.
Text can lend itself well to the application of any number of skills and strategies.
We want students to understand that reading is, in fact, the application of a whole storehouse of what they have learned. They re-read material so that students can enjoy and appreciate the text at different levels. On the first reading, they may comprehend very little while their attention is focused on decoding. As they read a second time, they may be focusing on certain skills that they have been directed to apply. Finally, on a third or maybe even a fourth reading, they begin to process at a much deeper level, hopefully with full comprehension.