males on average have 40 to 50 percent more upper-body muscular strength and 25 to 30 percent more of the aerobic capacity needed for endurance.
http://findarticles.com/p/articles/mi_m1571/is_n18_v11/ai_16907998/
That male mass/endurance advantage means not a thing at second base. Only a modicum of agility and hand to eye coordination is required to play there. The lack of athleticism required to play there is why there are far more shortstops than second basemen in the MLB HoF.
Again, there are plenty of women who have the smarts and muscle to keep up with men.
And there are absolutely girls who can keep up on the high school playing fields.
Schools can do what they want. Folks can practice their faith how they want.
But if you think the women who rode in the Covered wagons in the 1850’s we little weak creatures who sat at the feet of their men...well, you have been watching too much 1950’s TV.