John Dorr Nature Laboratory

Overview

Established in 1965 with a gift of 83 acres of undeveloped land, the Horace Mann School John Dorr Nature Laboratory has grown into a 320-acre living classroom in Washington, Connecticut, about 1.5 hours north of the Bronx. Fields, forests, streams, and ponds provide a dynamic environment where students explore nature, engage in outdoor pursuits, and deepen their understanding of the natural world.

Students begin visiting Dorr in second grade, with overnight programs starting in third grade. Resident faculty guide students in environmental science, conservation, outdoor living, and experiential learning. A transformative $8 million capital project in 2009 created the LEED-certified campus students experience today, including a main lodge and a multi-purpose barn/classroom.

Learning Through Experience and Community

The Dorr experience is grounded in the belief that awareness, responsibility, and appreciation of one’s impact on the world are essential to a meaningful life, aligning with HM's mission as an institution. Just as important is the development of self-esteem, which Dorr views as a cornerstone of individual growth.

Programs led at Dorr emphasize cooperation, reflection, and shared responsibility. Students learn that community cannot be imposed—it grows through working together, relying on one another, and engaging honestly with both the environment and each other. The setting itself becomes a medium for self-discovery, encouraging students to examine their relationships, values, and role within a community.

An Experiential Curriculum That Inspire Growth

Dorr’s curriculum is intentionally experience-based, designed to foster capable, self-determining individuals. Activities follow a "challenge by choice" philosophy, which encourages students to take calculated risks, build character, set personal goals, and grow in confidence within a safe, caring, and supportive environment that values differences and promotes acceptance. For an in-depth look at our program, view our Dorr Curriculum Guide. 

Since the 1960s, Dorr faculty have collaborated closely with classroom teachers to design grade-specific experiences that complement and extend classroom learning. Faculty and staff combine a deep passion for the outdoors with a commitment to helping students develop a lifelong connection to—and responsibility for—the world around them. Students also share responsibility for daily life at Dorr, including caring for common spaces. These shared tasks build ownership, accountability, and a strong sense of community.

Our Facilities and Emphasis on Sustainability

One of Horace Mann’s four campuses, the John Dorr Nature Laboratory is carefully designed to preserve as much of the land as possible in its natural state. Buildings are clustered together, surrounded by forests, meadows, and a flowing stream. 

The LEED Gold, energy-conserving facilities at Dorr include:

• The original Payne Lodge (1968)
• A 19,000 square foot lodge completed in 2009, which was constructed of environmentally responsible and sustainable materials, with solar roof panels that generate 30% of its annual electricity and solar collectors that provide 90% of the hot water
• Geothermal pump that reduces the energy needed to cool Dorr's offices by 20%
• Four heated cabins with running water
• Faculty residences
• High-ropes Odyssey Course
• Outward Bound wall
• Carolina Climbing wall with multiple routes
• Cooperative Adventure Tower (CAT)

Sustainability is central to the campus mission. The 2009 capital project expanded programming space, improved infrastructure, and enhanced environmental efficiency. The campus also features live solar data monitoring, allowing students and visitors to see real-time energy usage and generation, reinforcing lessons about renewable energy and stewardship.