01
Batches stay small on purpose
There are many competitive examination institutes in Pakistan, and most of them will tell you about their results. Fewer will tell you how many students sit in a classroom.
We cap a batch at thirty because a teacher can honestly mark thirty papers in a week. Past that, marking turns into ticking, and a ticked paper teaches nobody anything. When a batch fills, we open a second section rather than a wider one, and if we cannot staff a second section, the honest answer is a waiting list.