Girls need higher entrance exam scores than boys at 80% of Tokyo high schools
Key point here is:<p><pre><code>    [H]igh schools under Tokyo Metropolitan Government jurisdiction are the only prefectural schools to have separate enrollment caps for male and female students. The numbers at each high school are based on the ratio of boys to girls at public junior high schools in Tokyo.
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I.e., this is sort of “affirmative action” for boys since girls score much higher. From personal experience, too, I’ve seen girls score much higher than boys at the school level here in India.