A synopsis of the 1972-73 annual report for the Del Mod System is presented together with a brief description of the projects within the local schools. Individual teacher research projects are listed by teacher name, school district, and project title. Field agent programs and some conclusions and recommendations about their work are described. Project reports relating to the evaluation of each funded project, both in narrative and tabulated form, are included. Descriptions of ten activities undertaken by the mathematics and science education departments of the University of Delaware are presented. One project, the Science/Mathematics Resource Center, is described as having become a model within the University's School of Education. The Delaware Technical and Community College is described as taking the posture in the Del Mod System of providing facilities and services to teachers which are compatible with a technical college. Related programs are noted. What has been learned from the Del Mod activities is briefly described and changes to be made or further activities to be encountered are presented. (EB)