It could be shorter, but not by much: the school restaurant is a 10-minute walk from the school, and of course being French the food is ultra-local, organic, in-season home-cooked three-course meals (plus the cheese course, obviously), which you don’t scarf down).
Still, it’s annoying. My kid is very young still and 6 is very late for her.

Rural France : 8 to 6, and half-days on Wednesdays.
Or rather, 7.55 (first bell) to 6.
Same for the middle school. My 7th grader’s week goes:
Monday 8-6 (with a free half-period before lunch, and the regular 2-hour lunch break), Tu 8-6
W 9-12 Th 8-5 F 10-5.
(But she’s an overachiever and signed up for several electives. She could shave off 5 hours from her school week.)