Office 365 calendar/meetings/scheduling (and, I presume Google as well) would be more useful if there were a way for Ed:gen to export to or write a teacher or student's timetable to it.
Currently, people would need to create repeating appointments for each lesson manually, which is extra fiddly when a school has A weeks and B weeks timetables and a 1-week half-term holiday means the whole process then needs to be set up again on Office 365.