The Main Campus of Marin Horizon School is located in Mill Valley in a safe, quiet and friendly residential neighborhood called Homestead Valley. Nestled among the redwoods of Mt. Tamalpais, with Reed Creek just a stone's throw away, we incorporate the great outdoors into all aspects of study.

Our Toddler Cottage on Miller Avenue opened its doors to our youngest students in the fall of 2013.  The Toddler Cottage is a warm inviting space which can accommodate morning and afternoon extended care. It also has an enclosed outdoor play area.  

Our primary and lower elementary building houses large, light-filled classrooms with outdoor play areas and gardens.  Our upper elementary and middle school is located in a state-of-the-art facility with space for unlimited learning.

Our upper campus building provides:
  • Comfortably-sized, modern, and well-lighted classrooms fully equipped with state-of-the-art equipment and technology
  • Flexible space for large meetings and performance events
  • Dedicated and well-equipped science lab
  • Fully-equipped art studio
  • Large music room 
  • Well-sited, outdoor terraced seating and space for performances and whole-school assemblies