All the subject names are links to the course for this subject. Any tests given in a subject (outside moodle) are marked in the sched for each pupil (Bio). A teacher can edit the sched for his courses. Any changes will show up in the sched shown to pupils. You can search for the sched for a teacher or pupil (nice if you need to find someone ... ).
Teachers can also show a sched for rooms (find a free room).
I've written the block somewhat after the martian guidlines, but it needs more work before others can use it, so ... of any interest?