With little or relatively modest investment, schools being refurbished or undergoing maintenance can make disproportionately large gains in energy efficiency that can also result in large financial savings. This document offers guidance on the selection of appropriate measures that can improve a facility's energy efficiency, depending on the type of building, method of construction, and physical condition of the facility. It provides technical descriptions of the most commonly used measures, followed by examples of a combination of measures as applied to older, heavily constructed buildings and more recently built schools. It describes proven energy efficiency measures undertaken during school refurbishment along with case studies that illustrate the effectiveness of these measures. The case studies include details on economic performance together with descriptions of other benefits not readily expressed in monetary terms, such as improved comfort. Appendices present a description of the measures of economic performance and definition of financial terms, and discuss the creation of "user manuals" by the design team that can guide users in the physical operations of the building and its maintenance. A glossary is provided. (Contains 58 references.) (GR)