The character known as "Teacher" emerges through two figures shaping the protagonist’s education. Miss Henderson, a determined schoolteacher, arrives in Marysville and champions the protagonist’s enrollment amid her guardians’ resistance. She implements structured lessons, nurtures creativity, and expands access to literature, sparking the protagonist’s intellectual curiosity. Confronted by conservative parents opposing her progressive approach, Miss Henderson faces temporary suspension but persists, rallying students to stage a fundraising play for a school library—defying community backlash.

A second mentor, the initially enigmatic "Egg Man," is revealed as Mr. Johnson, a retired educator. He engages the protagonist during her errands, assigning weekly vocabulary lessons that sharpen her linguistic skills. Despite his brusque demeanor, he harbors a fervor for teaching and shares a respectful bond with Miss Henderson, evolving into a romantic partnership. Together, they complement the protagonist’s growth: Miss Henderson through formal instruction, Mr. Johnson through informal guidance.

When Miss Henderson departs for career advancement and Mr. Johnson returns to high school teaching, they propose taking the protagonist with them, though her guardians’ situation prevents it. Before leaving, they reveal their engagement, affirming their shared dedication to education. Their union and mentorship leave an indelible mark, equipping the protagonist with academic passion, tenacity amid hardship, and an appreciation for educators who defy convention to nurture potential.