Either none or the most current model believed accurate. They don't necessarily have to get into orbit mechanics and how they all get shaped, it's enough to give a general overview that the orbits are complex and involve every part of the atom. No lying to students, we know atoms don't follow some goofy celular structure with a nucleus and simple rings of electrons around it, there's no reason to "teach" what we know isn't the truth. Simplify by omission, not substitution.
Now I understand your problem. You fail to grasp the function of the Bohr model. It is not meant to be a "photographic" representation of the atom but a model to be used in classical physics to undertand the energy relationships of the principle parts of the atom.