<p>Getting a good GPA is dependent on how much effort you want to put in, regardless of what anyone says (unless you’re a genius and already know all the material).</p>
<p>In science classes, good grades come doing well on ~2-4 tests (among other things) and doing well on tests is independent of the other students in the class. The average of the class usually gets somewhere along the B/C border (unless the average is unusually high) so aim for being at least above average in everything you do.</p>