This book describes the design and evaluation of a computer-based information system for secondary schools in The Netherlands. It reports on three studies: (1) a pilot study; (2) the SCHOLIS project, which designed a computer-assisted system for school administration; and (3) the evaluation of the implementation of a computer-assisted Absentee Registration System (ARS). Following the introduction, chapter 2 discusses the rationale for the SCHOLIS project and describes a pilot study that examined available administrative software, new developments, and the effects of introducing computer-assisted school administration. Chapters 3 through 6 describe the goals and project activities of SCHOLIS, the design strategy, and design results. The sixth chapter reflects on the merits and demerits of the design strategy. Chapters 7 through 9 evaluate implementation of one of the SCHOLIS modules, the Absentee Registration System. A summary of results and their implications are included in the final chapter. Educators who wish to replicate the system should also consider the school decision-making processes and organizational features unique to their school. Program success would also be enhanced by government support, further research, and training for school administrators in the skills necessary for computer-supported policy formation. Twenty-five tables and nine figures are included. Appendices contain diagrams, information on the activities of absentee registration, interaction of the school system with the environment, an overview of the diagram hierarchy, glossary, and list of variables/indicators. The book concludes with a Dutch summary. (Contains 116 references.) (LMI)