If you take a class, and it is easy, you should have dropped it. I took many math and engineering courses in college, and women were never made to perform more than men were. There weren't men only office hours, men and women got the same tests and homework, and none of the professors disliked women in particular. Incidentally, I dislike the fact that many science and math courses are predominately male as well. There is no conspiracy to keep women out of science and engineering.
Women just choose to major in such things very often.
If you really want to change things, just go over to the liberal arts area, and try to entice young women to major in engineering or science. I am out of college for the time being, but it sure would make things nicer for the folks there now.