This Stamina Chart is a great resource to use at the beginning of the year to track how long your students can read to self. How I use this in my classroom is by posting it at the start of the year and as our reading stamina grows each day I pick a student to come fill in the chart with a marker. This is a great visual reminder of the progress that your students are making and they will love working towards meeting the end goal of 28 minutes.
This poster goes up by 2 minute increments from 2- 28 minutes.
I have included two different sizes of this chart. The first poster is 18 x 24. This is meant to be printed on a poster maker. The second poster is a standard letter paper size which you could use to make copies for each student or a smaller chart.