The family lives in the hills of Virginia. The father promises the kids that when they get bigger they'll go to school. The father has to leave for the army when the Civil War breaks out.
The father dies in the war.
When the mother says they'll be no school, the kids remind her that the father promised.
A neighbor donates his shed as a place. A women's group from the North will supply the books if the mother sends a quilt for auction. Mama makes the quilt (in the pattern Lee's Surrender), but needs some fabric to finish. The girl volunteers Papa's red flannel shirt, which she's been wearing to remind herself of Papa. The quilt is beautiful and they have plenty of new books for the school. So, even though Papa died, he was able to help keep his promise.