I'm working on a website for a local school district and need a plugin to manage back-end users' editing permissions. Users should be able to edit/create/delete only certain pages (and sub-pages) of the website, e.g. people from math department can only edit math pages, and athletic users only edit athletic pages, etc.
So far I could only find "role scoper", that works in a way, but has some issues and not exactly what I need.
Could you please recommend me the best plugin for managing editing permissions, possibly working with multi-sites? Thanks in advance.