This paper summarizes a study from 1987 on the Exploratorium's Explainer program. The Explainers serve as the primary staff available to the public on the floor of the museum. The purpose of the study was to determine whether science museums, through such programs, can significantly affect students' social development, their attitudes toward science, and their interest in science, teaching and museums. The study examines the impact of the Exploratorium on a group of students who may spend as much time in the museum as in school, and examined the program to understand its impact on the