Professors and high school teachers do treat women and men differently. I seen this for years. It takes thick skin to work around the bias. Like Ginger Rogers we have to dance as well backwards and in heels.
Not everywhere; I didn't encounter any bias while getting my bachelor's in physics.
My first wife worked in science. Most scientists in my expectation rejoice at anyone, male or female who can keep up.
It is fairly common for women to be able to keep up. It is rare to find women who think they need to. Still more rare are women who can keep up, that are attractive, and still think they should.
To truly be a scientist, you have to be more than a bit obsessive-compulsive. You have to give up so much else. It is a tough life. I am not one of those, but I know and honor one or two of them.
You're right...the data back you up. In high school, females consistently are graded higher than males, yet males do better on the SATs year after year in both verbal and math. This is likely due to the bias teachers have against boys and the favoritism shown towards girls. Good call...
I'll never forget my advisor advising me against signing up for a course because it had lots of math, and I was already employed by the school as a calculus tutor.
I don't remember what I said but it wasn't polite, and yes, I signed up anyway.