<P> Results of the reading achievement test: </P> <Dl> <Dd> <Dl> <Dd> Reading - ages 9 (light gray), 13 (dark gray), and 17 (black). </Dd> </Dl> </Dd> </Dl> <Dd> <Dl> <Dd> Reading - ages 9 (light gray), 13 (dark gray), and 17 (black). </Dd> </Dl> </Dd> <Dl> <Dd> Reading - ages 9 (light gray), 13 (dark gray), and 17 (black). </Dd> </Dl>

Which of the following in not true about the achievement gap in american education