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Heron Books was established in 1976 as a sister organization to the Delphian School, a non-religious K-12 boarding school in Oregon. Its purpose was to create high-quality materials for Delphian as an early adopter of proficiency- or mastery-based education.


Over time, the popularity of these materials grew. Today our materials are used by individuals, schools, tutors and homeschoolers around the world.


Heron Books operates under a corporate umbrella with Delphian, and its offices are located on the Delphian campus. Our team of writers, artists, sales and production staff all assist in academic or extra-curricular activities within the school, while also collaborating with the school’s faculty in the ongoing development of new and better books and learning materials. This unique collaborative relationship allows us to test and refine our materials through work with actual students and teachers.

While there are schools, tutors and homeschoolers throughout the world that use Heron materials, the following schools have contributed significantly to the development of our programs, books and materials, and continue to contribute feedback, support and expertise to the development of our materials:

Delphian School®
PreK-12 boarding and day

20950 S.W. Rock Creek Road
Sheridan, OR 97378

Delphi Academy® of Boston

PreK-8 day
564 Blue Hill Avenue
Milton, MA 02186

Delphi Academy of Florida
PreK-12 day

1831 Drew Street
Clearwater, FL 33765


Delphi Academy of Los Angeles
PreK-12 day

11341 Brainard Avenue
Lake View Terrace, CA 91342

Oak Crest Private School

PreK-8 day

1200 E Jackson Rd, Bldg 2

Carrollton, Texas 75006

Ability School

PreK-8 day

75 Knickerbocker Rd

Englewood, NJ 07631

New Leaf Academy

PreK-8 day

9604 Farm to Market Road 1826

Austin, TX 78737


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