STITE (Scientific and Technical Information Transfer for Education) is basically a system to interface between science information and the science learner. As such STITE acts as a link between STIC (Science and Technology Information Centers) and LIS (Learning Information Systems). In this third progress report it is concluded from a questionnaire sent to science educators that they are among the heaviest users of science literature but would prefer an easier and faster method of access. STITE interface system is designed for effective use of information stores. The modules of STITE are manipulable units of information relevant to specific needs of educators. The question of relating and structuring the modules of the interface system by types of requests is described using tree graphs. In the appendixes are some of the project's letters, the questionnaire, and lists of centers receiving utilization inquiry. (See also IR 001 047 and IR 001 048.) (WH)