Some books don’t take you back to school. They take you back to a feeling. A tightness in the chest. A silence you learned to live with. IX B: The Fragile Heart of an Achiever did that to me—not by reminding me of my own classroom, but by pulling me into a memory I hadn’t connected to school life until now.   I grew up in a co-ed environment. Boys, girls, shared benches, shared laughter, shared awkwardness. So, when people talk about the “only boys’ school experience,” I usua