Reports to: Director of Lower School
Status: Full-Time, Exempt
Start Date: Aug 21, 2026
About Marin Horizon School
Since its founding in 1977, Marin Horizon has been providing a challenging and robust academic
program combined with character-enhancing life skills. Marin Horizon is a place of creative, active
learning built around our commitment to developing each student’s confident voice. Marin Horizon serves
about 300 students from toddler through grade eight and is located in Mill Valley, CA.
We seek passionate, collaborative educators who are committed to designing engaging, developmentally
appropriate learning experiences for young learners.
Position Overview
Marin Horizon School is seeking an experienced and dedicated Third Grade Lead Teacher to join our
Lower School faculty. The Lead Teacher will design and deliver engaging, standards-aligned curriculum
across Language Arts (using Fundations for phonics), Math (using Bridges), and Social Studies, while
fostering a warm, inclusive, and academically rigorous classroom community.
This role requires a teacher who is flexible, relationship-centered, reflective, and able to create safe and
engaging environments for a wide range of learners. Strong communication, collaboration, planning, and
classroom leadership skills are essential.
Key Responsibilities
Design and deliver engaging, differentiated curriculum in Language Arts, Bridges Mathematics,
and Social Studies
- Create a classroom environment that supports the academic, social, and emotional growth of all
students
- Plan and implement lessons that reflect best practices in elementary education and align with the
school's mission and values
- Assess student progress regularly and communicate effectively with families regarding academic
and social-emotional development
- Mentor and support the professional growth of the Third Grade Associate Teacher, fostering a
collaborative classroom partnership
- Collaborate closely with co-teachers, learning specialists, and grade-level colleagues to ensure a
cohesive educational experience
- Participate actively in school community life, including faculty meetings, professional
development, curriculum planning, and school events
Marin Horizon School
305 Montford Avenue, Mill Valley, CA 94941
marinhorizon.org | ph 415.388.8408
