Long. long a go in 2004 we started to use and patch moodle in Dutch K12.
Student had sometimes 12 courses in parallel.
We created a block with a minimal courses-overview for each student:
black stones in the small overview are sections in moodle with open tasks. When you click on a stone, you get teleported to that section to see the task in context of that section.
AND we created a class overview of these blocks for the class teachers:
Smartphones did not exist yet, so we echoed the picture of the small overview also to the WAP of the students cell phone. in Portugal I gave the code on CD-rom to Martin but he lost it: would be nice to have these short hand overviews revamped in your new calendar views. For more details see pdf
And yes I know, it is a hybrid thing between a course overview and a calendar.