The California Naturalist Course is returning to Calaveras Big Trees State Park for an unforgettable journey into the heart of the Sierra Nevada’s ecology. This immersive course combines an engaging science curriculum with hands-on field experiences, creative problem-solving, authentic citizen science projects, and meaningful community service.

The Mission of the California Naturalist Course is to foster a diverse community of naturalists and promote stewardship of California’s natural resources through education and service. We introduce Californians to the wonders of our unique ecology and engage the public in the study and stewardship of our natural communities.

If you love exploring the natural world and learning about ecological connections, are excited to participate in citizen science and contribute to environmental research, or want to share your passion and inspire others to become environmental stewards, this program offers you the perfect opportunity to grow.

Program Details

Course Dates

Thursdays
May 28, June 4, 18, & 25
5:00 PM – 8:00 PM

Fridays
May 29, June 5, 19 & 26
8:30 AM – 4:30 PM

Program Flyer

Training Location

Ralston Classroom
at Calaveras Big Trees State Park

Learn among towering giant sequoias in one of California’s most spectacular natural classrooms and explore the fascinating natural history of the central Sierra Nevada.

Program Fee

$310

Refund Policy:

Full refunds, minus a $50 processing fee, are permitted until April 15, 2026. No refunds will be issued for any reason after  April 15, 2026.

Scholarships Available:

A limited number of need-based, partial scholarships ($55) will be available.

Program Highlights

  • Comprehensive 40-Hour Course: Combines UC science curriculum with guest lecturers, field trips, and project-based learning

  • Hands-On Learning: Experience science curriculum, hands-on field work, problem-solving exercises, citizen science projects, and community service

  • UC Certification: UC California Naturalist Certification awarded upon completion of course requirements, recognized throughout California

  • Volunteer Opportunities: Access opportunities for volunteering and advanced learning across California with participating organizations

  • Academic Credit: Opportunity to receive UC academic credit for your coursework. ( Additional Cost )

  • CBTA Membership: 1-year membership to Calaveras Big Trees Association

What You’ll Need

The California Naturalist Handbook: Second edition (2025, UC Press) – available for sale in the visitor center store

Field Notebook: Bring a field notebook for observations, sketches, and journaling

Time Commitment: Collegiate level class commitment including reading assignments and required projects in addition to weekly class meetings

Have Questions?

Please email Patty Haskell with questions

pabhaskell@gmail.com

Learn more about the California Naturalist Program:

calnat.ucanr.edu