In this follow-up survey, all children in elementary and junior high s
chools who were absent from school for more than thirty days in one sc
hool year from 1989 to 1991 in a certain city were investigated. The r
esults 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 ye
ar 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-attenda
nts. 2 In junior high schools, half of the students who were absent fr
om school for more than thirty days in one school year in 1989 and 199
0 were also absent from school for more than thirty days even the foll
owing year. And 80% of them were school non-attendants. 3 20% of the s
tudents 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 y
ear the next two years.