MIAMI — Nearly one-fourth of recent high school graduates who try to join the Army fail its entrance exam, painting a grim picture of an education system that produces graduates who can't answer basic math, science and reading questions, according to a study released Tuesday. The report by The Education Trust bolsters a growing worry among military and education leaders that the pool of young people qualified for military service will become too small... --snip-- The report found that 23 percent of recent high school graduates applying for the Army don't get the minimum score needed on the enlistment test....