I am going to chime in here, too. You need to tell the teacher that, at minimum, there are problems at home.
My D9 is not only dealing with this, but H's deployment. The school put her in a group of other kids whose parents are also deployed. She is adapting to that part well, anyway. They see our kids as much as we do in a day, only they get more awake time. Better they are prepared and it is not needed, than unprepared and your child implodes, leaving them wondering WTH happened to that great little kid.
SMW
M40/H36 T16/M14 4K B2/08 S4/08 current
Love never gives up, never loses faith, is always hopeful, and endures through every circumstance. I Corinthians 13:7