In his role as the manager of educational change, the secondary school principal is responsible for determining programs and procedures, enlisting teacher aid in those determinations, resolving staff resistance to change, identifying staff members as effective change agents, and working with them to implement change. To produce significant gains in pupil learning, four basic changes in school operating procedures are essential: (1) The principal should give about three-fourths of his working time to instructional improvement, (2) teachers should have more free time to improve their teaching skills, (3) pupils should have more time for independent study, and (4) there must be better utlization of educational funds, facilities, supplies, and equipment. Suggestions to help the principal discharge his primary responsibility to improve instruction include freeing him from other responsibilities by enlarging his administrative staff, increasing staff productivity through a horizontal and relatively informal type of organization, delegating decision-making and administrative responsibilities as much as possible, improving his own communication skills, and maintaining a clear understanding of roles and relationships among school system administrators. (JK)