This study investigated for the first time several characteristics of under
achievement in a large sample of I-long Kong elementary schoolchildren. Mor
e males were identified as underachievers than females, but the ratio was s
ubstantially less than the two-to-one rate typically found in the American
literature. The stability and persistence of underachievement increased dur
ing the elementary school years, and the stability of underachievement tend
ed to be higher in subject matter that was relatively more difficult, which
varied wth gender. Underachievement became more specific to particular aca
demic subjects rather than more general across the elementary grades. Paren
ts and teachers, but not the children themselves, perceived that underachie
vers were more capable than same-grade nonunderachievers (who score lower o
n ability tests), although this awareness is more likely directed at male t
han female underachievers, which has been observed in other samples. In gra
des 1-4, teachers provided extra mentoring, communications, and support to
underachievers. Thereafter underachievers became more disruptive, impatient
, and aggressive in school and perhaps at home. At that point, teachers bec
ame less supportive, offered less extra mentoring, and applied greater beha
vioral control over underachievers. Underachieving children also perceived
that their parents became less supportive and used more discipline in grade
s 5-6 relative to grades 3-4. These correlates of underachievement suggests
the existence of a syndrome of underachievement that separates underachiev
ers from children who have the same grades but lower mental ability.