"[...] we started to notice some trends in the opposite direction of what we expected: for technical ability, it appeared that men who were modulated to sound like women did a bit better than unmodulated men and that women who were modulated to sound like men did a bit worse than unmodulated women."
Another data point that suggests that instead of suffering from systemic negative bias, women are really enjoying systemic positive bias.
If there is a buffet of food, chances are you won't eat most of it. But usually you can sample a wide range of different foods at a buffet. School should be the same way. It should present you with a variety of pursuits so you can find out what you like and what you are suited too. There is no way to tell if "maths" isn't for you until you've had a serious go at it.
Another data point that suggests that instead of suffering from systemic negative bias, women are really enjoying systemic positive bias.