Thirty-eight secondary school teachers from seven public school systems attending a five week full-time institute at Montgomery Junior College participated in this summer program. The teachers were introduced to the newly available Earth Science Curriculum Project materials. Three college teachers and an experienced ESCP high school teacher conducted most of the 160 hours of lectures, laboratories, and field trips. Three-fourths of this time was devoted to laboratory work with ESCP materials and related college-level content. Twelve guest lecturers representing universities, government, and industry spoke on topics related to ESCP subject matter. Six Saturday follow-up meetings were held throughout the 1967-68 academic year. Feedback from participants indicated that the summer program was relevant to their needs and provided many with the stimulus to attempt to teach ESCP the following year. (BC)