The Mission of Three Tree Montessori School is to offer AMI-recognized Montessori education to the students of South King County.

Three Tree Montessori School provides an excellent academic education that empowers children to become independent, creative, empathetic life-long learners who will build a better world.

• Excellence in Education. Three Tree Montessori School celebrates the formation of the universal child by providing excellence in education. We do this by following the philosophy and teachings of Dr. Maria Montessori and the Association Montessori Internationale.
• High Performance Culture. We believe a stable environment leads to a strong foundation where children, families, and staff have the opportunity and freedom to grow academically, socially, and emotionally. We maintain the confidence of our children, families, and staff by creating a high-performing culture, engaging in transparent and informed decision-making, and utilizing sound financial practices.
• Safety. Safety of the children is paramount in every decision we make and every action we take. We create a safe, secure environment as part of our work to maintain the confidence of the parents who entrust their children to our care.
• Community Involvement and Connection. Three Tree Montessori School values the commitment that our students, families, staff and community make to our school. We honor that commitment by providing an environment of service, awareness, respect, and connectivity within and amongst classrooms, school, home, and the broader community.
• Diversity. We value human connections. Our school reflects, embraces, and celebrates the diversity within our community.
• Integrity. We acknowledge the necessity of preserving our core values and vision in this everchanging world. Three Tree Montessori School proactively creates our future through planning, leading, and implementing with integrity.
• Earth Friendly. We have an ecological interdependency with our earth. Through global awareness, we work as a community to honor, connect to, and preserve our local environment through conscientious practices.