He also heavily encourage student to learn with each other during "perm" hours (basically in highschool, hours where student have to stay in school but have nothing to do and can work on their own, go to the library or play/chill/whatever), but that was before and because he fondly remember the days where all 26 of us, the full class, all teamed together against homework (yeah, i had great classmates)
How I set up my course is different from traditional education. Most instruction happens from self study (including videos and software). Face to face time is for questions. All elements, material, staff, and students, have to be tuned for this setup to work though and is hard to pivot to in existing setups because education (in the Netherlands at least) is very entrenched.
This self-study centered learning approach, like the in-person tests instead of projects, comes from necessity. Great (and I expect ever increasing) teacher shortages.