This study examined the relation of attention control and school performance in a sample of 113 school children (51 boys, 62 girls), ages 9 to 12 years (M = 10.86, SD = 0.91). Children and parents completed the Attention Control Scale for Children, which measures children's ability to focus and shift attention, and also a scale for assessing symptoms of Attention-Deficit Hyperactivity Disorder. Teachers provided a global rating of children's school performance. Analysis indicated that attention control correlated positively with school performance.