Lesson plan sheets were collected from letter communication of each local junior and senior high school as well as from literature. These lesson plan sheets were arranged and investigated for items of constituent element and types. The results were summarized as follows. 1. The organization of plans were constituted of three frames as early plan, unit plan, and hour plan. 2. The lecture and inquiry types among the collected lesson plan sheets showed 91.9% and 8.3% in junior high school as well as 87.9% and 3% in senior high school, respectively. The mixed types did not find out in junior high school, however the mixed types showed 9.1%in senior high school. 3. The items of constituent elements in lesson plan sheets were varied by the contents and the kinds of teaching unit in science education of secondary school.