So you'll often hear it said (correctly) that while schools teach Newtonian physics, once you get to university and learn about quantum mechanics, you'll realise that much of Newtonian physics is incorrect.
I'm going to say that that isn't really a correct statement either.
Newtonian physics just omits some factors from the calculation, and hence makes some assumptions.
In all normal situations there's no point including the factors from other theories that only change the answer at ridiculously small scale, or near the speed of light, or in the presence of ridiculous mass.
It would not be productive use of paper or compute time for civil engineering. In normal conditions, all the more-complete theories reduce to the equations of Newtonian physics.
So we're not teaching something "incorrect", we're teaching something that is correct and more useful and productive for most circumstances.
Once you learn the other theories of physics, you're not suddenly going to come up with some amazing new pool shot, or learn to fly or how to walk through walls. You're still constrained by Newton's laws of motion at this scale, standing on Earth.
And there's no analogous more advanced "theory" of sex that produces better answers in specialised conditions. We don't need a third sex involved to make a baby if travelling near the speed of light or something.