Thank you all. Unfortunately our public school has 3 lunches and students switching grades for math is extremely uncommon. While I am grateful for their willingness to accommodate DS7, I do expect some bumps along the road.

Geofizz- I like the folder idea for missed work back in his homeroom. I am already planning on making him a binder with folders/paper and a separate pencil pouch inside with pencils, glue stick, scissors, protractor, compass etc. since he will not be at his desk during math. Fortunately he is an organized little kid, but was also frustrated and stressed when the teacher would tell the kids to cut or glue and he didn't have the right supplies. Of course the teacher was happy to help him, but it made him uncomfortable feeling unprepared.