Yes, I know that this is already possible using the **Up** and **Down** buttons in the Teachers dialog. However, this approach is not practical when dealing with a large number of teachers, as each teacher has to be moved manually.
My suggestion is intended to provide a simpler and more organized way of displaying the data. Grouping teachers by subject would make navigation much easier, improve readability, and save time, especially in large schools. This is the main idea behind my feature request, rather than simply changing the order of teachers.