> Hmm... so you're saying that students aren't segregated into artificial cohorts of a specific age, and there isn't an authority figure in the classroom telling them what to do?

IIRC that sounds a bit like Montessori (done right), but that's uncommon generally and extremely uncommon in upper grades.

I wasn't even sure what an upper-grade Montessori program would look like, and I found this: https://amshq.org/About-Montessori/Inside-the-Montessori-Cla....