* Early informal education: Her early education was largely the result of Anne Sullivan's dedicated teaching, starting with the breakthrough moment at the well. Sullivan taught Keller to communicate through touch, spelling words into her hand. This laid the foundation for all future learning.
* Private instruction: Keller received significant private tutoring throughout her childhood and adolescence. This wasn't standardized schooling, but rather tailored instruction focusing on communication, literacy, and a wide range of subjects.
* Formal schooling: She attended the Cambridge School for Young Ladies, Radcliffe College (where she graduated with a Bachelor of Arts degree), and continued her education throughout her life through private study and travel.
In essence, Keller's education was a highly individualized and intensive process driven by her teacher's innovative methods and Keller's own incredible determination. It wasn't based on a traditional school structure, but rather a personal and deeply committed approach to unlocking her potential.