I suspect it will be difficult to find information about academic performance from that time period. This article from 18 years ago suggests that girls receive

I suspect it will be difficult to find information about academic performance from that time period. This article from 18 years ago suggests that girls received extra encouragement to overcome the lowered expectations due to their gender. https://www.cbsnews.com/news/the-gender-gap-boys-lagging/ https://www.cbsnews.com/news/the-gender-gap-boys-lagging/