The American Lung Association of Los Angeles County developed the SAFE-AT-HOME curriculum to teach preschool children home safety concepts through early childhood group experiences. This report evaluates the efficacy of the curriculum by testing 2 experimental and 2 control groups of children from 34 preschool classes on fire, water, foreign ingestion, and general lung safety. Experimental subjects participated in 30 game-like safety lessons over a 2-month period. The curriculum emphasized concrete educational experiences to help the children establish cause and effect connections between safe practices and fire, water, and hazardous materials that youngsters might ingest. The activities were presented within the context of the regular preschool program at times and locations of the teachers' choice. Pretests and posttests were conducted according to the Solomon research design. Analysis of variance of posttest scores resulted in very significant differences among groups, later confirmed by a "t" test between gain scores of the 2 pretested groups. Results of the evaluation indicate that, by participating in SAFE-AT-HOME, children at the preschool level were more aware of safety measures than children who did not participate. (DR)