The North Carolina Advancement School was established in 1964 to study educational underachievement and to develop and disseminate methods and materials which the state's public schools might use to combat underachievement. It was operated as a private residential school for eighth grade underachieving boys from the public schools of the state. During its initial period it accommodated 2,323 boys and 252 visiting teachers who obtained inservice education on the problems of underachievement. The Advancement School developed and field tested learning programs in communications, geology, probability and problem-solving, remedial reading, and physical education. These programs were shown to be effective both at the Advancement School and with underachievers and other students in a representative selection of the public schools of the state. Descriptions of procedures followed and materials and tests used in the field testing program are appended. (Authors/JK)