It is the first day of school in Chad, Africa. Children are filling the road. Will they give us a notebook? Thomas asks. Will they give us a pencil? Will I learn to read? But when he and the other children arrive at the schoolyard, they find no classroom, no desks. Just a teacher. We will build our school, she says. This is our first lesson. James Rumford, who lived in Chad as a Peace Corps volunteer, fills these...