Observational data on mother‐child interaction were compared with data on child‐peer and child‐adult interactions at preschool for children at 42 months and again at 50 months. Direct parallels between home and school data were few, but each school variable was associated with a pattern of home variables. For example, several types of negative interaction at school were associated with lack of involvement with the mother and maternal hostility and/or maternal permissiveness coupled with lack of maternal hostility. Sex differences in the relations between home and school data were abundant.