The primary objective of the Project to Increase Mastery of Mathematics and Science (PIMMS) is to bring high quality staff development in mathematics and science to teachers of all levels. This report describes the progress PIMMS has made over the past 12 years in fostering an appreciation of mathematics and science by teachers in the state of Connecticut. The report sets forth the project's future visions along with its goals and objectives, and the effects the project has had on different individuals and institutions committed to science and mathematics education, especially in the past 5 years. The report used interview data collected during the summer of 1995 and additional supportive material provided by the project itself to document general findings. Data indicated that PIMMS plays a pivotal role in promoting significant improvement in the teaching and learning of mathematics and science in schools. It is concluded that PIMMS has realized and will continue to realize its goals and objectives and that the project is making very substantial improvements in science and mathematics education by providing effective professional development programs to committed teachers, who in turn teach and influence their colleagues. Sections of the report include introduction, analysis of data and methodology, challenge for PIMMS, findings, themes and conclusions, and recommendations. (JRH)