Maybe, but there is selection bias when looking at just girls who go to all-girls schools. Assuming they are mostly private, this would likely select for wealth

Maybe, but there is selection bias when looking at just girls who go to all-girls schools. Assuming they are mostly private, this would likely select for wealthier families, which may have a correlation with STEM careers. Furthermore, girls from all-girls schools have parents that are willing to enroll them in all-girls schools, which likely correlates with a certain personality type, whatever that may be.