The Institute in Physical Science was developed to address the need for updated information and training in physics, chemistry, and technology among elementary and secondary teachers of physical science. Four major objectives were addressed: (1) improve teachers' understanding of fundamental concepts in physics and chemistry; (2) improve fifth- and sixth-grade teachers' understanding of physical science and provide them with training in the use of physical science activities and investigations and the essential elements to teach physical science in grades five and six; (3) provide high school physical science teachers with training in the use of activities and investigations stressing the development of the essential elements when teaching introductory physics and chemistry concepts; and (4) update teachers' knowledge of recent research findings in physics, chemistry, and science education. This report includes a description of the operation of the project and an evaluation of its effectiveness. Fifty-eight teachers participated in four courses: Concepts in Chemistry; Concepts in Physics; Frontiers in Physical Science; and Concepts in Physical Science. Program evaluation data show the participants reported to have achieved, in their opinion, each of its four objectives. (MVL)