There are two frontrunners in this category, in my opinion. No one else comes even close:
With a school subscription, you can share notes school-wide. It also does well recognizing handwritten and scanned notes.
If you’re a Microsoft shop and have admins supporting you, they can configure some very cool sharing abilities in this robust note-taking app — the only synchronous note-taking app that works.
However, if you would like to share your notes with others and collaborate between school or pupils you can create bulletin board using: padlet or linoit.
Diigo:
Share online texts-and comments in the margins-with others.