This checklist is designed to help elementary school principals assess and improve science programs in their schools. The checklist is divided into four major sections, each dealing with an area that has an impact on these programs: (1) administrative aspects, considering the science curriculum plan, provisions for science in the budget, principal's leadership role, and staff development practices; (2) science texts and/or written curriculum materials, focusing on content, process, and several related areas (consistency with curricular goals, accuracy and clarity, compatibility with developmental level of students, relevancy of materials, etc. ); (3) classroom visitations, focusing on observations of teacher and student behavior during science classes; and (4) resources and facilities, looking for evidence of science resources/facilities in and beyond the classroom, and determining how resources are acquired. Instructions for converting checklist responses into a matrix format are included. The matrix provides a systematic procedure for comparing what is desirable in the school science program to what is being achieved. It offers a method for diagnosing a program, and identifying both strengths/weaknesses--strengths that can be capitalized upon and weaknesses that can be eliminated. (JN)