Well there are only two options. Either the universe had a beginning or it is eternal. An eternal universe doesn't need a creator. The big bang says the universe has a beginning in the finite past. Thus the big bang says the universe was created and not eternal.
Yes but the difference is why is was created and how. I think it is insane to say that the universe came into being out of nothing without having a creator outside of said universe, and i think it is even worse to be teaching that to young impressionable minds.