Copying information into multiple notebooks
I teach the same section 4 times a day. Instead of having to copy an assignment or reference sheet or whatever I need the students to have 4 times into each class notebook, it would save time and energy to have the capability to copy the information once and decide which period(s) get that resource.
Mr Barnes commented
If you use cross notebook distribution in OneNote 2016 you can copy/distribute pages to all students across several notebooks in one go. Hopefully this is one of the features that will make it across to the new online and win10 versions of OneNote