A data-backed playbook for selling textbooks to US school districts: sell to curriculum offices (not principals), respect the Feb to May window, clear the procurement gates, and the five mistakes we measured across 43,984 calls.
Districts decide Feb to May, order Apr to Jun, budgets refresh July 1, delivery Jul to Aug. The measured K-12 textbook purchasing calendar, and what happens to vendors who miss the window.
We made 43,984 calls into the US K-12 market to find who actually buys textbooks. Answer: the district curriculum office (~75% of named owners), not principals. Full decision-maker map by school type.