In this follow-up survey, all children in elementary and junior high schools who were absent from school for more than thirty days in one school year from 1989 to 1991 in a certain city were investigated. The results were as follows:(1) In elementary schools, 1/3 of the students who were absent from school for more than thirty days in one school year in 1989 and 1990 were also absent from school for more than thirty days even the following year. And half of them were school non-attendants.(2) In junior high schools, half of the students who were absent from school for more than thirty days in one school year in 1989 and 1990 were also absent from school for more than thirty days even the following year. And 80% of them were school non-attendants.(3) 20% of the students who were absent from school for more than thirty days in 1989 were also absent from school for more than thirty days in one school year the next two years.