Start from the upper left-hand corner rather than the middle. If a teacher needs more space, then zooms out, now the notes are in the center of the page. This makes it hard for students to understand the order of notes. Bring back ability to swipe left or zoom out to space that doesn't expand the left-hand border. Could also make this option to "flip" and keep right-hand size aligned for those countries that write right to left.

Or extend down like in notebook.