Do they have construction paper

YES ~

I was at Dollar Tree last night. They had two sizes as follows: Large sheets in a fabric bound note pad and Small Sheets in a "ream" and encased in a protectivr plastic wrapper. Both were in the new school supplies area; facing the back wall from the door, rear, second front/back aisle from the right hand side of store, second to last gondola on right hand side of the aisle. Good luck!

Not sure

Actually, I saw it every time I went to Dollar Tree.

Yes normally, especially with school year starting.