What If My Students Don’t Have The Stamina To Write For A Solid 20 Minutes?

Good point.  Many teachers start with a 10 minute write and work their way up as student skills strengthen.  Tell them it’s about training for stamina just like long distance running.

Usually, grade 4 students will not have the stamina for a solid 20 minute write.  But, some grade 7’s and 8’s are “unproductive” writers as well – and will need to be worked up to the 20 minutes you want.