As the result of a survey conducted by the auther on the status of the 12 eduxatienal institutiens for menatlly retarded children in Korea and their quartering facilities as well as on 934 children accommod- ated in such institutions, the following conclusion has been reached: 1) More than a half (approximately 58 percent)of the facilities for mentally retarded children are con- centrated in Seoul. About eaighty-three percent of these superintendednts. Although theses facilities were first established as many as 22 years ago, it has been only five or six years since education was actu- ally started for mentally retarted children. 2) Out of a total of 179 employes, teachers number 99, there by constituting approximately 57.6 per cent. Out of them, however, only 32 teachers or 2.8 percent have special teachers licenses. Thus, each teachers has to take care of an average of 29 children. This is excessive a number of children per tea- secure more teachers for this field. 3) Out of the mantally retarded children investigated 57.6 percent suffer from physical disorder in addition to mental retardation, 53.0 percent from mental alienation illnesses besides retardation, and 25 pent from physical, mental disorders in addition to ratardation. It is therefore necessary to maintain medical and nursing facilities together with educational facilities. however, two places have no medical facilities at all, and four other places, without medical personnel, have to receive medical support from nearby hospitals or clinics. 4) The total number of children in the surveyed facilities is 934, who can be broken down into 58.7 percent boys and 41.3 percent for girls. They are classified into 12.5 percent for idiot, 37.7 percent for imbeiles, 32.7 percent for morons, and 17.3 percent for thoes children on borderline. Their average age is 13.9 years. 5) As the result of education, the illiteracy rate of mentilly retarded childern has decreased from 78.1 percent to 32.1 percent while the percentage of those taking the primary school course has increased from 12.2 per cent to 33.5 percent. As a result, it has been learned that education is definitely nece- ssary for Retarded children though it may be a difficult task. 6) The children who have mentally retarded children among their brothers or sisters constitute 6.3 pet- cent of the total number. The corresponding rate for boys is 3.5 percent while that for girls is a rem- arkably higher rate 10.6 percent. Through studies on the causes of their mental retardation, it has been learned that 39.6 percent of them is of the inherent type and 35.3 percent is of the environme- ntal type. Control and improvement of health of mothers and children, early diagnosis and early trea- tment are believed to be very important because they could prevent or alleviat much of these conditions. 7) The average age of teachers and employes is 35.3 years, an indication that a great proportion of them is experienced in a way or another as their major difficulty or problems in serving with these special school, 22.5 percent cited inadequate payment 24.5 gave the inadequate public understanding, and 22.5 percent pointed out the lack of understanding on the part of give parents.