This paper attempts to answer the following question: To what extent can the large body of experimental research in concept attainment be used to suggest an empirically derived set of prescriptions for teaching certain types of classroom concepts? From the majority of experimental research on concept attainment over the past 35 years, 235 studies were selected whose independent variables could be identified and placed into the following groups: concept variable, stimulus variables, subject variables, and task variables. Section I delineates factors in the experimental context which may lower external validity. Section II provides four examples of conceptual objectives found in the classroom, along with their operational evidence. Section III includes a set of 61 statements about concept attainment formulated from the research, while Section IV is a set of teaching prescriptions suggested by these statements. Section V cites the research from which each statement was derived, as well as research which failed to support that statement.