Mixed aged classrooms are kind of a pilar in Montessori like schools. the idea is that, as you mature, it is also part of your development to teach and guide o

Mixed aged classrooms are kind of a pilar in Montessori like schools. the idea is that, as you mature, it is also part of your development to teach and guide others, you have mastered something when you can teach it. Equally younger kids learn not only from the teacher but by example and mentoring from older students. From my experience it really teaches older kids to act responsibly, forces more emotional maturity and just not be dicks to younger kids, and for younger kids it really accelerates their learning.