Mrs. Baker is Holling's strict, no-nonsense English teacher who Holling initially believes dislikes him. As the story progresses, Holling discovers Mrs. Baker's compassionate nature and learns about her life outside of teaching, including her athletic past and personal challenges.

Holling's father is the head of the Hoodhood household and a businessman who prioritizes his career over family connections. He values reputation and success, often at the expense of his relationships with his children. His actions serve as a contrast to the values Holling learns over time.

Heather is Holling's older sister, who is politically aware and engaged with the cultural movements of the late 1960s. She often clashes with their father due to her strong opinions. Her relationships and decisions influence Holling, leading to important developments in both their characters.