Twenty-eight multiply-handicapped children with hearing impairment were fitted with hearing aids and investigated at educational institutes in the preschool and elementary school periods. a)Seventeen of 28 children who were observed for more than six months demonstrated fair or good effects of hearing aid use. In the preschool period,65% of those in special schools for disabled children and 11% in kindergarten and 24% in the deaf school were educated. In the elementary school period,53% of those were educated in the school for disabled children and 12% in the elementary school and 35% in the deaf school were educated. b) Five children showed no improvement in auditory behavior. c) Six children had diffculty with the fitting of hearing aids because they did not like ear molds being put in their ears. Children in groups b and c were educated in schools for disabled children in the preschool and the elementary school periods.