This study examined the controversial practice of grade retention and child
ren's academic and behavioral adjustment using data from the Quebec Longitu
dinal Study of Kindergarten Children. We employed an autoregressive modelin
g technique to detect the impact of being held back during primary school o
n subsequent academic performance and behavioral development until age 12 y
ears. The results indicate both a short- and long-term negative influence o
n academic performance for boys and girls. Children's anxious, inattentive,
and disruptive behaviors persisted and, in some cases, worsened after grad
e retention. These prospective associations were long lasting and more pron
ounced when grade retention occurred early in primary school. Boys were mor
e vulnerable to the negative influence of grade retention on academic perfo
rmance and classroom disruptiveness. Disruptive behavior in girls was compa
ratively less associated with long-term consequences than boys. Nevertheles
s, girls experienced both short- and long-term academic performance problem
s in the aftermath of grade retention. Children's prosocial behavior appear
ed unaffected by grade retention. These results are independent of what wou
ld have been expected by the natural course of academic and behavioral deve
lopment.