 Another study done by White and Frederiksen showed that when twelve 7th grade science classrooms were given time to reflect on what they deemed to be quality work, and how they thought they would be evaluated on their work, the gap between the high achieving students and the low achieving students was decreased.One way to help with this is to offer students different examples of other students' work so they can evaluate the different pieces.By examining the different levels of work, students can start to differentiate between superior and inferior work.