Marzano scales are well-crafted learning goals based on the Common Core Standards. They give a clear direction to the students about descriptions of levels of understanding and performance.
The scales in this products include:
W.4.1 - Opinion Writing
W.4.2 - Informative Writing
W. 4.3 - Narrative Writing
I give each student a copy of the scales and asked them daily to track themselves on the scale. I also make a poster of each scale and display the appropriate scale to the goals being taught.