The chart above shows the male-female test score ratio for the 2009 SAT math test (data here). For example, for perfect scores of 800, males (6,928) outnumbered females (3,124) by a ratio of 2.22 to 1. In other words, 69% of test-takers who got perfect math scores were males vs. 31% of perfect scores by females. Or we could also say that there 222 high school boys who got perfect SAT math scores for every 100 high school girls.
The graph further shows that boys outperformed girls at all 23 math test scores between 580-800 (10 point intervals, with male-female ratios of 1.0 or above), and then for math test scores between 200 points and 570, girls outnumbered boys (male-female ratio below 1.0).