This video shows Montessori 0-3, 3-6 and 6-12 environments.

Peaceful Child School offers three curricula:

• Toddler (2-3)
• Preschool / Kindergarten
  "Primary" (3-6)
  (starts 2m53s)
• Elementary (6-12)
  (starts at 7m30s)

Peaceful Child School is founded on principles followed by Association Montessori International (AMI), the original organization that Dr. Montessori founded herself. If you wish to read more, you may visit AMI's website.