To become a certified Master Naturalist a trainee must complete the following:
- Complete an organized training program sponsored by a Master Naturalist chapter that involves a minimum of 40 hours of instruction composed of both classroom and field experiences
- Obtain a minimum of 8 hours of approved advanced training
- Complete a minimum of 40 hours of chapter approved volunteer service
To retain certification in each subsequent year members must complete a minimum of 8 hours of advanced training and provide a minimum of 40 hours of volunteer service in chapter approved project activities.