Possible solution – Stick a mini white board to the wall.  Every time you set homework, write it up on the mini white board so the class can see you writing it. When you are next asked when the homework is due in, just point to the board. The students will get used to coming into the room and reading it.

Resources. A mini white board per class, attached to the wall.

Outcome.  Students no longer ask when homework is due in and there are no arguments about when homework is due.

#neverstoplearning