Most of the language teaching techniques in the books came out of overseas classrooms of twelve to eighteen children. When a Thai teacher tries them on a class of forty and they collapse, it isn't because the teacher did anything wrong. The scale is simply a different world. A big class needs one extra layer of management that the books never mention: a system that gets forty children moving as a single team.
The Quiet Signal: The First Tool to Install
Your voice cannot win against forty children, and it shouldn't have to try. Install a signal the whole class knows in the very first week. You raise your hand, and every child who sees it raises theirs and stops talking. The silence rolls from the front of the room to the back on its own in about ten seconds. Practise it three or four times with a stopwatch and make a game of it, with praise for any class that beats its own record. After that it becomes a reflex that lasts the whole year.
Group Leaders: Turning One Teacher Into Eight
Split the room into groups of five and rotate the group leader every month. The leader has three clear jobs: hand out and collect the group's papers, check that everyone understood the instructions, and be the only person in the group who may come and ask you a question. That last job matters most. It turns forty voices asking the same thing into eight, and most of the questions get answered inside the group before they ever reach you.
Marking Forty Papers Without Losing Your Evenings
- Make peer marking against the key at the front your default. Mark work yourself only for free writing, where nothing else will do.
- Deep spot checks: collect every paper but mark only ten of them properly, rotating which ten. Nobody knows whose turn it is this week, so everybody does their best every time.
- Use worksheets that arrive with their own answer key. Writing keys yourself is the silent cost that eats more of a teacher's time than anything else.