The present study was designed to examine how preadolescents gain an unders
tanding of idioms. In particular, it examined the role of idiom familiarity
in conjunction with students' language-based academic abilities. The parti
cipants were 50 children (mean age 12 years 4 months) who attended a primar
y school in Christchurch, New Zealand. All students spoke standard New Zeal
and English and were considered by the school to be progressing normally. T
he results indicated that idiom understanding was closely associated with s
tudents' familiarity with idioms and with their skills in reading and liste
ning comprehension. Moreover, students who were good comprehenders of idiom
s outperformed their classmates who were poor comprehenders on all associat
ed measures: idiom familiarity, reading comprehension, and listening compre
hension. Guidelines for instruction in idiom understanding are offered for
speech-language pathologists who work collaboratively with teachers in the
regular classroom during language arts activities. The guidelines reflect t
he position that multiple factors, working in synergy, promote the understa
nding of idioms in youth.