I use this to send home in my students weekly take home folders. I slide it into the front cover of their folder. I update it when I do my progress monitoring. That way my parents are constantly informed of their child's progress. I put a sticky note with notes of their reading level (based on progress monitoring) and the date I added it to the folder. I just continue to put stickies over the last sticky so it shows parents the progress they have made over time.
I the math part, I circle the current level and write the date underneath.