Financed with ESEA Title III funds since 1970, the School Information System (SIS) was designed essentially to furnish school administrators with data and information with which to make better decisions. The basic means were to (1) build and improve a data bank, (2) prepare and disseminate computerized reports to the decisionmakers--especially school principals, and (3) train them to understand and ultimately to use the reports in their managemet of schools. By the end of the third year, 96 principals of the 98 total, in response to a survey, reported they understood SIS reports "rather well" or "very well," while a consistent majority said they used the reports at least monthly for at least six different functions. In addition, the reports turned out to have considerable appeal to community, parent groups, central office personnel--as well as for the principals and assistant principals. Perhaps most indicative, a major part of project costs were picked up by local funds after the Title III grant expired in April of 1973. (Pages 33-42, and 1-3 of Appendix C may reproduce poorly.) (Author)